The technological improvement in the half-bell-mouthed part of the electric rock-loading machine was analyzed and summarized.
对电力装岩机半喇叭口零件的工艺改进进行了分析总结 ,并对该零件的工艺过程、改进后的经济效益进行了全面对比。
Upswing and accident prevention of the stacking-raking machine in coal mine;
煤矿耙斗装岩机的改进及事故预防
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