| 单词 | ball cock |
| 释义 | ball cock浮球阀【化】 球阀; 球心阀 ball cock ball cock n.（名词）A self-regulating device controlling the supply of water in a tank, cistern, or toilet by means of a float connected to a valve that opens or closes with a change in water level.浮球旋塞，浮球阀：一种自动调节装置，通过与随水位的改变而打开或关闭的阀门相连接的浮球来控制水槽、蓄水池或抽水马桶内的蓄水流 |
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