protective coal seam的用法和樣例:
例句
- The glass window had a protective overcoat applied to it.
玻璃窗涂有一層保護層。
- All buried lines are coated with a protective covering to save them from corrosion.
所有埋設的管道必須涂上保護層,以防生銹腐蝕。
protective coal seam的相關(guān)資料:
臨近單詞
国内精品美女A∨在线播放xuan