stepping switch type relay步进式: marching type开关: Q-switching继电器: electric relay; relay步进式开关: step-by-step switch; stepping switch步进式继电器: step-by-step relay; stepping relay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:步进式开关继电器，即可在微信中查询翻译
