China practices unified power dispatch, hierarchical power management and operation of power grids by regions.
中国执行统一的权力分配，分线管理和地区行使。
Operation control system including the central dispatch management system, trackside equipment, Vehicle on-board equipment and communication system.
运行控制系统包括中央调度管理系统、轨旁设备、车载设备和通信子系统四大部分。
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