rock-loading machine是什么意思

用法例句

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