... current of perturbation 扰动流 current of traffic 列车运行方向 current operating concept of net income 即期经营净利概念 ...
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列车运行方向
Train direction
以上为机器翻译结果，长、整句建议使用 人工翻译 。
本文论述了下坡道延续进路与区间列车运行方向的安全问题，同时分析了利弊。
The paper describes the safety on down grade successive route and in running direction of trains in sections and analyzes the advantages and disadvantages at the same time.
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