ordinary lift 中文意思是什麼
ordinary lift
解釋
一般用電梯-
Compared to an ordinary rudder, the value of lift coefficient of ichthyoid rudder is about 30 % higher and the maximum rudder angle of it nearly reaches 45 degrees. ichthyoid rudder is a design under such a conception as to effectively utilize the propellers slipstream for rudder action, and featured by having a fish - shaped one - piece construction that is to say - no part of ichthyoid rudder can move in the water
其研究的魚形舵是一個沒有在水下移動的魚尾形剖面單片結構,增加了全舵的剖面拱度,使螺旋槳尾流的折射水量增強,進而增大了水動力的作用,使之比普通流線形舵的升力提高30左右。 -
On the base of analysing the ordinary design methods, aiming to the minimum annual cost or investment, taking the pipe length and water pump lift as decision - making variables, the linear programming models are presented to optimize the diameters of main network and field network
論文首先分析了常規微灌系統規劃設計方法,在此基礎上,以年費用或投資最小為目標,用離散管徑方法,以管段長度和水泵揚程為決策變量,分別建立了水泵加壓式和自壓式干管管網優化設計以及田間管網優化設計線性規劃模型。
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