large water head 高水头
Galvanised felt nails - used for fixing roofing felt with a large head to keep water out.
镀锌认为钉子-用于固定屋面觉得与我性我色我去干一个大头部保持水。
Finally, some other characteristics of the variable water head standard device for large flow rate have been dealt with and theoretically investigated.
本文对使用的方法进行了初步探讨，并讨论了变水头大流量标准装置的一些其它特性。
For high arch DAMS in valleys with the characteristics of high water head, large discharge and large power, the problems of energy dissipation and scour prevention are serious.
高拱坝泄洪消能的特点是坝高落差大，流量大，功率大，位于河谷狭窄地区，泄洪消能与防冲问题突出。
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