including micro-electronic phase-detecting track circuit
微电子相敏轨道电路 including micro-electronic phase-detecting track circuit 文件编码系统 document coding system ..
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介绍新型WXJ25型微电子相敏轨道电路接收器的工作原理，技术条件及维修标准。
The working principle, technical specification and maintenance standard of the new WXJ25 phase-sensitive track circuit receiver were introduced in this paper.
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