短語詞組短語balanced flat slide valve 自動(dòng)平衡平滑閥match type flat slide valve 平衡工平滑閥;平衡式平滑閥type of flat slide valve 火柴盒式滑閥self -balanced flat slide valve 自動(dòng)平衡平滑閥match -box-type of flat slide valve 火柴盒式滑閥flat slide shut -off valve 平板式截止閥 返回 flat slide valve