block signal是什么意思

用法例句

Application proctice and principle of the fiberoptic transmission network of the railway dedicated communication and semi antomatic block signal is introduced in this article.

介绍了铁路专用通讯与现场之间单线半自动闭塞信号多网合一光缆传输的应用原理和实

The essay introduces the principle and basic constitution of movable block signal system and further discusses its advantages and disadvantages by comparing it with standard movable block signal system and finally prospects its future development.

文章通过讲述移动闭塞信号系统的原理以及基本构成,在与准移动闭塞制式的信号系统的对比中,进一步阐述移动闭塞制式信号系统的优势与缺点,并对其未来的发展进行展望。