Import import trap or trap is known for the steam pipe network and devices, can automatically discharge condensate, air and other non-condensing gas, and blocking water vapor leak valve.

进口疏水阀或称进口疏水器是用于蒸汽管网及设备中，能自动排出凝结水、空气及其它不凝结气体，并阻水蒸汽泄漏的阀门。

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Preliminary analyses of images like that shown above indicate that the smooth regions around the middle are porous and leak frozen water vapor directly out into space.

对如上图之类照片的初步分析表明该彗星中间光滑的区域有许多孔状结构，正直接将冰块泄漏到宇宙中。

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A carbon steel liner is utilized to provide a leak proof vapor barrier for containment of concrete construction.

为防止混凝土结构的安全壳泄露，其内部有碳钢的衬垫。

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