While the self-ballasted fluorescent lamp tube is damaged, the ballast also scrapped, resource saving consideration is not environmentally friendly.
而自镇流荧光灯灯管损坏时，镇流器也同时报废，就资源节约考虑是不环保的。
2
Self ballasted fluorescent lamp ballast, starter with a full set of control circuit, and installed in the Edison ( Edison ) spiral lamp holder or a bayonet lamp holder.
自镇流荧光灯自带镇流器、启动器等全套控制电路，并装在有爱迪生（Edison）螺旋灯头或插口式灯头。
3
By running the program based on vehicle-rail coupling dynamics, compute the dynamic response of elastic sleeper ballasted rail and common sleeper ballasted rail under same working condition.