controlled block

• 已经关 闭信号的闭塞区段[区间],联锁[半自动]闭塞

controlled block的用法和样例：

例句

1. The number of measuring units from an arbitrary starting point in a record, area, or control block, to some other point.
   以记录、区域或控制块中的任意起始点到另一个点之间的测量单位数。