thanks to your help, we finished the work head of time 多虧你的幫助,我們提前完成了任務(wù)。
by pure chance we hang together to work head off to achieve the our common goal 一次偶然的機會把我們結(jié)合在一起為這心中同一個目標(biāo)去努力。
the calculated result from an example shows that the stable sectional area reduces with the increase of working head, or the decrease of the tailrace tunnel length 計算結(jié)果表明,尾水調(diào)壓室斷面面積隨水輪機工作水頭的增大或尾水洞長度的縮短而減小。
the special structure of zippered plastic pipe zippered seep holes made a greater seepage quantity on the condition of bare pipe ( no anti-blocking material adopted at the mouth of seep holes ) . so several kinds of anti-seepage material were adopted in the experiment of this part in order to find the proper anti-seepage material ( nonwoven fabrics glued by neoprene ) and working head ( 3m's working herd on initial irrigation ) 由于拉鏈?zhǔn)剿芰瞎艿莫毺貥?gòu)造(拉鏈?zhǔn)綕B水孔口),裸管(滲水孔口不采用任何防堵材料)情況下滲流量很大,所以本部分試驗采用了幾種防滲材料試驗,最后通過比較分析,找到了合適的防滲材料(氯汀膠粘無紡布)和工作水頭(初始灌水時3m工作水頭)。