信息提供方式
information provision means
直供方式交流电气化铁道
AC electrification railway with direct power supply system
继承创新方式方法
Carrying forward and Innovating Ways
AT牵引供电方式
AT traction power supply mode
摆式供弹系统
swing type ammunition feeding system
采购供方评估
procurement source evaluation
抽凝式供热机组
condensing bleeder turbine