封严 meaning in English

obturage

Check that the joints of the pipes are sealed properly
检查一下管道的接口是否封严了
Shipbuilding . shaft lines . forward glands for propeller hups
造船工业.轴线.螺旋桨桨毂的前封严压盖
Q . 1 who is the only one that worthy to open the scroll with seven seals
问题1 .谁才配得展开七印封严的书卷
Honeycomb rolls for nonwoven
化工蜂窝封严
Research on the method of response calculation of labyrinth assembly with dry friction
带干摩擦的篦齿封严装置响应计算方法研究

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