Accordingtothespeed，Chinesetrainsaredividedintodifferen...
問題詳情：Accordingtothespeed，Chinesetrainsaredividedintodifferentclasses，identified（確認）withdifferentlettersandnumbers．Thelettersrefertodifferentclasses． G﹣High﹣SpeedElectricMultipleUnits（EMU）Train Th...