During hot weather, the city’s electrical system is often overloaded by fans and air conditioners.

天气炎热时, 这座城市的电力系统常常因电风扇和空调器的使用而过载。

The paper analyses a digital swither overload control strategy using a GSPN model.

论文使用广义随机Petri网对一个换机的过载制模型进行。

The newly fitted parts are the current overlad automatin protection system,the direct viewing ammeter and the power-supply control switch.

新设电流过载自动保护系统，直观式电流表及电源制开关。