supervisory control relaysupervisory relay监控: supervisory control; monitor ...继电器: electric relay; relay相位监控继电器: phase monitoring relay磁控继电器: magnetic control relay; magneticcontrol relay光控继电器: phoforelay; photorelay; photoswitch; phototroller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:监控继电器，即可在微信中查询翻译
