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。

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。

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.

利用车辆-轨道耦合动力学理论所编制的程序，计算弹性轨枕有碴轨道与普通轨枕有碴轨道在相同工况下的动力响应。