throttle button节: joint; knob; node汽阀: steam valve节汽阀: steam throttle valve节汽阀柄臂: throttle shaft arm节汽阀杆: throttle lever下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:节汽阀钮，即可在微信中查询翻译
