We need a mechanical digger to level the ground.
我们需要一台挖掘机来平整土地。
Mechanical ventilation with the cages on the ground was tested in large steel warehouse.
结合本地气候与储粮特点进行高大钢板平房仓地上笼机械通风技术应用试验。
Mechanical ventilation with the cages on the ground was tested in large steel warehouse.
结合本地气候与储粮特点进行高大钢板平房仓地上笼机械通风技术应用试验。
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