I bored a hole so that the fixing bolt would pass through.

我钻了个孔，好让固定插销穿过去。

youdao

Cover is fixing on the tube plate with some sealed gasket by bolt.

端盖用螺栓将它们固定在管板上并加入垫片密封。

youdao

Cover is fixing on the tube plate with some sealed gasket by bolt.

端盖用螺栓将它们固定在管板上并加入垫片密封。

youdao