... unpitched sound 无音调的声音；噪声 valve position switch 阀位开关 variable pitch 可变螺距 ...
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throttle valve position switch 节流阀位置开关
valve position switch unit 阀位开关装置
TVPS Throttle Valve Position Switch 节流阀位置开关
control valve position switch 控制阀位置开关
valve position indicating switch [电] 阀位指示开关
valve position monitoring switch 阀位回讯器
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Solenoid valve, hand wheel, valve position switch, air filter regulator and so on.
电磁阀、手轮机构、阀位开关、空气过滤减压器等。
youdao
The control for this valve is a rotating crank handle that has to be screwed what feels like a hundred turns to switch from one position to the other.
FORBES: What Do All The Controls On A Fire Engine Truck Do?
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