Role: at start ballast circuits, the flip-flop because of the co-ordination of the moment have a high-voltage, so that the discharge lamp to start. Line at work to play the role of limit tube current.
作用：镇流器在启动线路中，由于触发器的配合产生瞬间高压电，使灯管放电启动。
The large track maintenance machines were used in the railway engineering construction of replacement for ballast on the Guangzhou-Maoming railway line.
文章介绍了有关在广州-茂名铁路运用大型养路机械进行更换石碴施工的技术和经验。
Ballast line connection from the pipe tunnel to be extended to ballast well in the DB tank on port as well as Stbd side.
管弄出来的压载管路接头延伸至左右舷的双层底压载水井中。
Ballast line connection from the pipe tunnel to be extended to ballast well in the DB tank on port as well as Stbd side.
管弄出来的压载管路接头延伸至左右舷的双层底压载水井中。
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