drill head

基本解释

Spindle feeds and speeds are controlled by selector levers which engage the proper gears in the drill head.
主轴的进能量和转速是通过选速杆使主轴箱中的适当齿轮相啮合而控制的。
Automatic tool change high frequency spindle can change drill head, milling cutter conveniently, quickly, and position accurately.
自动换刀电主轴更换钻头、铣刀方便、迅速，定位准确；
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The machine is working with the blade rotating for drilling and digging the soil. It consists of the universal joint, mounting frame, gear box, drill head and draw rod, etc.
禹城市一力机械制造有限公司生产的挖坑机是利用刀片的旋转运动，对土壤进行挖出土作业的挖坑机具，他由万向节，悬挂架，齿轮箱，钻头和拉杆组成。

Soon after that, I got it in my head to drill my first well.
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Of the 25, 000 wells Weatherford International helped drill last year, the gnarliest was in the Knotty Head prospect in the Gulf of Mexico.
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The chairman of the Joint Chiefs of Staff, by mentioning that the joint drill had been in the works, was apparently trying to head off criticism that the United States was raising tensions by rushing warships into the troubled area.
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