COMMUNICATIONS FOR UNDERGROUND TRANSIT SYSTEM.

被引：0
|
作者：
Cramer, Robert J.
机构：
来源：
World construction English ed. | 1984年 / 37卷 / 01期
关键词：
ALARM SYSTEMS - Applications - RADIO COMMUNICATION - Control;
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学科分类号：
摘要：
There are many variations of voice and data communications used in underground transit systems which are similar to those required by any transit system. Because of their environment, however, underground transit systems typically require more communications, for example, fire, alarm, control circuits, and ventilation control systems. The problems in the design of underground communications systems are entirely different from those encountered for surface transit systems.
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页码：56 / 57
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