同时指出了在开发研制煤矿井下无轨辅助运输车辆制动器时应注意的几个问题。
At the same time, it points out several problems on developing of brakes for the coal mine underground trackless auxiliary transportation vehicles that should pay attention to.
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。
The paper expounds the importance and advantages of underground auxiliary trackless haulage, and introduces its applied status and making level in our country.
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