auxiliary trackless haulage
auxiliary trackless haulage
辅助无轨运输
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The paper expounds the importance and advantages of underground auxiliary trackless haulage, and introduces its applied status and making level in our country.
阐述了煤矿井下无轨辅助运输的重要性和优越性，介绍了国内的应用现状和国产化程度。
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