In view of the existing problems in the thyrister medium frequency power supply applied in the GW 0 5 t coreless induction furnace,the limitation of the inner and outer bridge starting circuit to suit the changing of load is analysed.
５ｔ无芯感应熔炼炉所用可控硅中频电源存在的问题，分析了内外桥启动电路在适应负载变化上的局限性，总结了采用预充电启动电路对可控硅中频电源进行改造的情况和试运行结果。
Investigate history and present trend of inland and overseas brake,analyse unusual-brake cause on increasing-speed passenger car,resolve present problem by reasonable operation of driver and adopting new equipment.
根据国内外制动机发展的历史和运用现状 ,分析现阶段在提速客车上产生的意外制动原因 ,这可以通过司机合理操纵与采用新的硬件设备来解决问
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