air pressure signalpneumatic signal气压: pressure; atmospheric pressu ...信号: signal; semaphore; gun低气压信号: depression signal电动气压信号: electropneumatic signal高压信号器: high lock alarm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:气压信号,即可在微信中查询翻译