1)  block signal
闭塞信号
1.
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
2)  block signal machine
闭塞信号机
3)  manual block signal
人工闭塞信号
4)  standard movable block signal system
准移动闭塞信号系统
5)  movable block signal system
移动闭塞信号系统
1.
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。
6)  block signal,blocking signal
"闭塞信号,阻塞信号"
补充资料:胞门闭塞


胞门闭塞


病名。出东汉·张仲景《金匮要略·妇人杂病脉证并治》。指妇人七七之期,天癸竭,地道不通 ,经水断绝,为宿有瘀血阻滞胞宫而致漏下的症候。症见崩漏,暮则发热,少腹里急,腹泻,手掌灼热,唇干口燥等,治宜温经补血,方选温经汤(《金匮要略》)。
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