working head meaning in English

工作水头
工作压头

Thanks to your help , we finished the work head of time
多亏你的帮助，我们提前完成了任务。
By pure chance we hang together to work head off to achieve the our common goal
一次偶然的机会把我们结合在一起为这心中同一个目标去努力。
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
计算结果表明，尾水调压室断面面积随水轮机工作水头的增大或尾水洞长度的缩短而减小。
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 )
由于拉链式塑料管的独特构造(拉链式渗水孔口) ，裸管(渗水孔口不采用任何防堵材料)情况下渗流量很大，所以本部分试验采用了几种防渗材料试验，最后通过比较分析，找到了合适的防渗材料(氯汀胶粘无纺布)和工作水头(初始灌水时3m工作水头) 。