...a security system with satellite relays.带有卫星传输设备的保安系统In the end, the network reliabilities considering voltage sags and protective relays or not are compared.最后比较了计及电压暂降和保护性能前后的配电网可靠性指标变化.Materials and physical config...
New relays of troops were sent to the battle front.新补充的部队已送往前线.The mechanical relays , which have been assumed in Fig . 4 - 9 , can be replaced by electronic switches.图 4-9 中使用的机械式继电器, 可以用电子开关来代替.A visual or audible sign...