Freedom Semi-float-type steam trap, only one and a half barrels of the ball-type float for the activity components, opening down, the ball barrels that are sluicegate pieces, but also seals.

 
  • 自由半浮球式疏水閥只有一個(gè)半浮球式的球桶為活動(dòng)部件,開(kāi)口朝下,球桶即是啟閉件,又是密封件。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan