... rotary drill 回转式凿岩机 rotary drilling machine 回转式钻床 rotary drilling rig 扭转钻机 ...
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The utility model provides a rotary plough drilling box which belongs to the technical field of agriculture machine fittings.
本实用新型提供一种旋犁钻箱，属于农业机械配件技术领域。
A portable and rotary type ultrasonic drilling machine is developed and designed for drilling of carbon fibre composition components.
为碳纤维复合材料构件的钻孔，研制出一种便携式旋转超声钻。
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