瑞(Rui)士(Shi)时(Shi)间(Jian)继(Ji)电(Dian)器(Qi)是(Shi)一(Yi)种(Zhong)利(Li)用(Yong)电(Dian)磁(Ci)原(Yuan)理(Li)或(Huo)机(Ji)械(Xie)动(Dong)作(Zuo)原(Yuan)理(Li)来(Lai)延(Yan)迟(Chi)触(Chu)头(Tou)闭(Bi)合(He)或(Huo)分(Fen)断(Duan)的(De)自(Zi)动(Dong)控(Kong)制(Zhi)电(Dian)器(Qi)。(?)它(Ta)可(Ke)以(Yi)在(Zai)接(Jie)受(Shou)启(Qi)动(Dong)信(Xin)号(Hao)后(Hou)开(Kai)始(Shi)计(Ji)时(Shi)，(?)计(Ji)时(Shi)结(Jie)束(Shu)后(Hou)工(Gong)作(Zuo)触(Chu)头(Tou)进(Jin)行(Xing)开(Kai)或(Huo)合(He)的(De)动(Dong)作(Zuo)，(?)从(Cong)而(?)推(Tui)动(Dong)后(Hou)续(Xu)的(De)电(Dian)路(Lu)工(Gong)作(Zuo)。(?)