The drill has variable speed control.

这钻机有变速控制。

《牛津词典》

Its vector control system is one of the most complicated ac adjustable speed control systems.

其矢量控制系统也是最复杂的交流电机调速控制系统之一。

youdao

A new speed controller with sensor feedback was developed to improve the speed control of induction motors.

为提高异步电机转速环的动态性能，提出一种新型的有速度传感器的转速控制器设计方案。

youdao

It enables the user to control the speed and sound levels of orchestral music playing on a computer.

VOA: special.2011.05.11

The beat will do--control--that, so it's the pace or speed of the beat.

节拍才是根本,所以速度指节拍的快慢

耶鲁公开课 - 聆听音乐课程节选

Physicists use super-powerful magnets to speed particles and control radiation like X-rays.

VOA: special.2010.10.08

Check out an interactive sample of the shutter speed control's benefits after the break.

ENGADGET: Lytro camera gets manual controls, new colors and accessories for exacting light-field fans

The disk severed all the plane's hydraulic lines, virtually cutting off all steering and speed control.

CNN: Can airliners really fly upside down?

Naturally the project also aims to improve traffic safety, reduce environmental impact and - thanks to smooth speed control - cut the risk of traffic tailbacks.

ENGADGET: Volvo's driverless road train in Spain is public mainly on the plain (video)