relay: n.1.接替的马;驿马;接替的狗;(备有接替马匹的)旅馆。2.接替;接替人员;补给供应。3.分程递送;传达;转运;【军事】递骑;【体育】接力赛跑。4.【电学】替续器;【机械工程】继动器;【无线电】转播的无线电节目。短语和例子work in [by] relays 轮班工作。 a fresh relay of workers 刚接班的一批工人。 a key relay 键控继
Electric heating protect allecate : apply to cow pressure ellctronic tube relay , air electronic tube relay temperature control , heat protect utensils and car etc 电热保护器配套产品:适用于低压电器,航空电器,温控器,热保护器及汽车车电器。