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The indispensability and principle of the automatic classification humping yard system is introduced in this paper.
本文介绍了编组驼峰自动化系统的必要性和工作原理。
youdao
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The indispensability and principle of the automatic classification humping yard system is introduced in this paper.
本文介绍了编组驼峰自动化系统的必要性和工作原理。
youdao