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
The low - voltage relay and the excess voltage relay are integrated into one relay , which can display the real time of the voltage of the circuit and the limit of voltage can be modified 该继电器的设计思想是将过压继电器和欠压继电器集成到一起，并且实时显示所测电压值，能修改电压的上、下限。
