The drill has variable speed control.

这钻机有变速控制。

《牛津词典》

This pressure must be under control, and we control it by means of the mud which we circulate down the drill pipe.

这种压力必须加以控制，我们让泥桨顺着钻杆向下循环，用这种方法来控制压力。

youdao

Dojo charting provides methods to control zooming to drill down to the smallest details of your chart, including scrolling and panning (moving the chart with your mouse in two dimensions).

dojo制图提供了一些方法来控制缩放，以向下钻取到您的图表的最小细节，包括滚动和平移(使用您的鼠标在两个维度上移动图表)。

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The muscular man is working hard to control a powerful drill that is cutting through the rock that surrounds him.

VOA: special.2009.03.23

To complete the drilling without mishap, the rover's operators on Earth had to devise new procedures to solve a series of computer software problems that affected the craft's motor's control systems, said JPL drill-systems engineer Scott McCloskey.

WSJ: Rover on Mars Extracts First Rock-Core Sample

With full control of its plant in Abu Dhabi, Hilong has an additional drill pipe production capacity of 11, 023 tons, compared with its 44, 753 tons on the mainland.

FORBES: Add Oil! Chinese Drill-Pipe Maker Ventures Into The Middle East

At 8:20 p.m. on the day of the explosion the pressure data suggest there was a constant flow of sea water being pumped into the drill pipe that was displacing the heavier mud system which was the primary pressure control for the well.

WSJ: The Oil Disaster Is About Human, Not System, Failure