slave valve液压: hydraulic pressure自控: automatic control; autocontr ...换向: changing-over; change; jibe; ...阀: established house or power g ...液控换向阀: pilot operated directional control valve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:液压自控换向阀,即可在微信中查询翻译