rain seal 中文意思是什麼
rain seal
解釋
防雨密封裝置-
Placting as on the foundation should keep in the level. should use cements to seal up as bottom with the foundation in order to prevent rain water from entering cable room
組變安裝就位,應找水平,組變底座與基礎之間必須用水泥沙漿密封,以免雨水進入電纜室內
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