hand regulator手动: hand movement; manual operat ...器: implement; utensil; ware差动第器: differential regulator滑动第器: slip regulator气动第器: pneumatic controller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:手动第器，即可在微信中查询翻译
