combined changeover switch组合: make up; compose; constitute转换开关: commutation switch; tumbler ...q转换开关: q-communication极转换开关: polechanger主转换开关: master switcher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:组合转换开关,即可在微信中查询翻译