水儿紧张地说。
The process is non-toxic and of course, water tight!
这一过程中不产生毒素，当然水密性也很好！
Reattach cover plate to make an air and water tight seal.
重新固定盖板，并紧密密封防止空气和水通过。
Flexibility and hosing test for small water tight hatch cover(water tight door and window).
水密小舱口盖（水密门、窗）启闭灵活性、冲水检查。
Flexibility and hosing test for small watertight hatch cover (water tight door and window).
水密小舱口盖(水密门、窗)启闭灵活性、冲水检查。
Cloth tight enough to hold water;
布料紧密且不透水；
Cloth tight enough to hold water;
布料紧密且不透水；
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