D85-67*6D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-6

李女士：。。   :。。    ：0731-8。。  。。  。。   公司：。。

D85-67*6臥式多級離心泵，長沙東方工業(yè)泵廠優(yōu)勢產(chǎn)品，十七年堅(jiān)持生產(chǎn)高效臥式多級離心泵，傾力奉獻(xiàn)！流量：85立方米每小時（m3/h），揚(yáng)程：402米（m），進(jìn)出口徑均為：150mm，電機(jī)功率：160KW-2極。

--------------------------多級泵效率計(jì)算公式及汽蝕余量、吸程概念
什么叫多級泵的效率？公式如何？
指多級泵的有效功率和軸功率之比。η=pe/p
泵的功率通常指輸入功率，即原動機(jī)傳到泵軸上的功率，故又稱軸功率，用p表示。
有效功率即：泵的揚(yáng)程和質(zhì)量流量及重力加速度的乘積。

pe=ρg qh （w） 或pe=γqh/1000 （kw）     ρ：泵輸送液體的密度（kg/m3）
γ：泵輸送液體的重度 γ=ρg （n/ m3）     g：重力加速度（m/s）
質(zhì)量流量 qm=ρq （t/h 或 kg/s）

什么叫汽蝕余量？什么叫吸程？各自計(jì)量單位表示字母？
泵在工作時液體在葉輪的進(jìn)口處因一定真空壓力下會產(chǎn)生汽體，汽化的氣泡在液體質(zhì)點(diǎn)的撞擊運(yùn)動下，對葉輪等金屬表面產(chǎn)生剝蝕，從而破壞葉輪等金屬，此時真空壓力叫汽化壓力，汽蝕余量是指在泵吸入口處單位重量液體所具有的超過汽化壓力的富余能量。l單位用米標(biāo)注，用（npsh）r。吸程即為必需汽蝕余量δh：即泵允許吸液體的真空度，亦即泵允許的安裝高度，單位用米。
吸程=標(biāo)準(zhǔn)大氣壓（10.33米）-汽蝕余量-安全量（0.5米）    

易損件：首級口環(huán)（首級密封環(huán)）、次級口環(huán)（次級密封環(huán)）、軸套、導(dǎo)葉套、平衡環(huán)、平衡盤、平衡套、填料、機(jī)械密封、葉輪。材質(zhì)：耐磨鑄鐵，鑄鋼，球鐵，不銹鋼等

保質(zhì)期：正常使用情況下，易損件保質(zhì)半年，整機(jī)保質(zhì)一年，配件供應(yīng)充足。

開戶行：長沙銀行華興支行，賬號：800 1199 690 2010，稅號：43018161684368X

D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,D85-67*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,7*6,