The motor is powered by high voltage DC supply and the current from the fuel cell system is regulated via a DC DC converter.

发动机采用高压直流电驱动，电流转换通过直流-直流转换器实现。

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In this thesis, how to design a brushless DC motor control chip is discussed in detail.

本论文详细阐述了如何设计一个无刷直流电机的控制芯片。

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The methods were discussed to design the speed governing system of DC motor.

详细讨论了直流电机调速系统的工程设计方法。

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The stainless steel enclosure houses the same 1, 400-watt DC brushless motor as the previous models, dispersing HEPA-filtered "sheets" of air through a single laser-cut slit in each of two wings that extend from the Tap's sides.

ENGADGET

Designed to be lightweight and cheap to produce, the robotic bicep upgrade uses a (mostly) aluminum frame, battery-powered DC motor, cable drive system, racket braking and thumbstick controller for movement, with a BeagleBone board supervising the electronics that pull it all together.

ENGADGET: UPenn's TitanArm exoskeleton prototype makes light work of heavy lifting (video)