mechanical mine face 高档工作面
mine mechanical engineering 矿山机械工程 ; 矿山工程机械
mine mechanical CAD 矿山机械CAD
coal mine mechanical equipment 煤矿机械设备
mine mechanical and electrical 矿山机电
mine mechanical and electrical equipment 矿山机电设备
coal mine electro-mechanical equipment 煤矿机电
·2,447,543篇论文数据，部分数据来源于NoteExpress
The Plan B would drill at an 85 degree angle into an area of mine shaft that is used as a mechanical workshop.
CNN: New drill arrives in Chile with great fanfare
Under Plan B, a hole is being drilled at a roughly 80-degree angle into an area of the mine shaft that is used as a mechanical workshop.
CNN: STORY HIGHLIGHTS
Helping Komatsu persuade the mine operator to switch was a new drive system that instead of the conventional mechanical axle and cogs uses rear-wheel-mounted electrical motors.
FORBES: Magazine Article
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