The Transmission mode, structure characteristics, locking units for mechanical leveled unit are also introduced, and accuracy analysis of the leveled unit is also performed.
进行了几种方案的比较，并介绍机械调平装置的传动形式、结构特点、锁紧装置，并对调平装置进行了精度分析。
But when loops, several spread-spectrum radios and centre control unit (moving block system with 'centralized' structure) fail, the system can not be running in the ATC mode.
但是当环线、多个扩频电台、中央控制单元(“集中式”移动闭塞系统)等设备出现故障时，系统将无法工作在ATC模式下。
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