... drain flash tank 疏水扩容箱,疏水膨胀箱 drain grating 拦污 drain gully 落水口 ...
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... diffraction grating 衍射光栅 drain grating 拦污栅,排水沟栅... grating space 晶面距离,栅线间距...
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trash rack
The utility model is a water grating board which is convenient to drain. The utility belongs to water grating used in municipal works and sewers of streets and dwelling communities.
一种方便排水的水箅盖，属于市政工程、道路、生活小区内等下水管道上 使用的水箅盖。
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