| 单词 | needle valve |
| 释义 | needle valve【化】 针(形,孔)阀 needle valve needle valve n.（名词）A valve having a slender point fitting into a conical seat, used to regulate accurately the flow of a liquid or gas.针状阀：装在圆锥形阀座上的有细杆的阀，用于准确地调整液体或气体的流动 |
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