单词 | ball valve |
释义 | ball valve【化】 球阀; 球心阀 ball valve ball valve n.(名词)A valve regulated by the position of a free-floating ball that moves in response to fluid or mechanical pressure.浮球阀:一种由自由浮球的位置来控制的阀,该浮球随液体或机械压力而运动 |
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