道岔表示器 meaning in Chinese

signal point indicator
switch indicator

Signal point indicator lamp
道岔表示器灯
The system consist of three parts : the switch indicator ( serves as an subsidiaries ) , the main communication equipment and notebook computer as the main engine
该系统由道岔表示器(子机) 、主通信机和主机(笔记本电脑)三部分组成。
Then the whole scheme design and research of the system are given . and then based on the deep comparisons among the variable switch indicators , the reliability of communication between the main communicating machines and data transfer is studied , and the detail method for realization is presented too . at last , the system design is proven to be fully feasible by the actual development and simulation experiment , and the prospective aim is achieved in the session of connection and actual emulation experiments
论文中首先详细介绍了系统研制的目的、组成、完成的功能，其次给出了系统的整体方案设计和研究思路，再次着重对道岔表示器的多种制式进行了深入的研究和比较，并在此基础上对主通信机及数据通信的可靠性进行了研究和设计，给出了具体的实现方法；最后进行了实际的制作，并通过试验证明本设计是完全可行的，在系统联机试验和现场模拟试验阶段达到了预期的设计目的。