switching power supply短语²²⁹⁵⁵ 基本例句 开关式电源 Both self-exciting PC switching/span> power supply and extra- exciting PC switching power supply have a starting circuit, which is simple, but directly affects the starting of the power supply. 对于 PC开关电源，无论是自激式还是他激式都存在一简单的启动电路。 zidian8