The pier arrangement on spillway crest with sloping upstream face is studied by 310 sets of experiments in the paper.
本文通过310组试验，研究了上游面倾斜的溢流坝的闸墩布置。
There are many treatment method for seepage of concrete dam body. Blocking at upstream face and drainage at downstream face is one generally adopted.
混凝土坝体渗水处理目前方法很多，一般采用上堵下排的方法。
The technique of extruded concrete side wall is a new method for construction of upstream face slab of CFRD, which was first used during construction of the Ita dam in Brazil.
挤压式混凝土边墙技术是混凝土面板堆石坝上游坡面施工的新方法。
If the air filter 18 is fixed, force-fit or permanently secured in the filter box 22 or housing 12, a user may clean the upstream-face of the air filter 18 using a vacuum or other cleaning methods.
如果空气过滤器18是固定的，过盈配合或者被永久固定在过滤器盒22或外壳12内，则用户可以使用真空清洁或其他清洁方法清洁空气过滤器18的上游表面。
If the air filter 18 is fixed, force-fit or permanently secured in the filter box 22 or housing 12, a user may clean the upstream-face of the air filter 18 using a vacuum or other cleaning methods.
如果空气过滤器18是固定的，过盈配合或者被永久固定在过滤器盒22或外壳12内，则用户可以使用真空清洁或其他清洁方法清洁空气过滤器18的上游表面。
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