constant control valve恒定: constant控制阀: control valve; actuated valv ...真空恒定控制: cvc constant vacuum control给定控制值: reference固定控制: fixed control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:恒定控制阀,即可在微信中查询翻译