[化] 节流阀

throttling valve的用法和样例：

例句

Several different valve needles were designed and manufactured for a superfluid helium system.摘要针对某超流氦系统所需要的低温节流阀，设计并加工了几种不同结构形式和尺寸的阀针。
A throttle valve control device is composed of a stator core with a solenoid and a rotor carrying a throttle valve.一种节流阀控制装置，包括一个带螺线管的定子铁芯和一个带节流阀的转子。

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