18信息移频自动闭塞
18information frequency shift automatic block
Pulsinelli四血管闭塞法
Pulsinelli 4-vessel occlusion
ZPW-2000A无绝缘移频自动闭塞
ZPW-2000A Jointless Track Circuit Frequency-shift Automatic Block System
ZPW-2000A jointless track circuit frequency-shift
ZPW-2000自动闭塞改造工程
ZPW-2000 automatic blocking system reconstruction project
半自动闭塞
Semi-automatic Block System
Semi-automatic block
Semi automatic block
Semi-automatic Blocking
Semiautomatic block
半自动闭塞系统
Semiautomatic block system