The design is adapted for manufacturing various alternating current-direct current electromagnetic relays.

该设计适用于制造各种交直流电磁继电器。

youdao

Alternating current, direct current.

交流电，直流电。

youdao

He says the current interest in straw bale houses is a direct response to the problem of climate change.

VOA: special.2009.10.05

Their job is to convert high-voltage alternating current from the mains into low-voltage direct current for mobile phones, laptops, iPods and other electronic gadgets.

ECONOMIST: How a boring gadget saved $2 billion-worth of electricity

Since 2005, the company has stood out in the fast-moving LED industry with an innovation that allows LEDs to be powered by alternating current, or AC, rather than requiring a transformer that turns AC into direct current.

WSJ: Seoul Semiconductor's LED-Lighted Path

Siemens is also offering high-voltage direct current technology, but ABB is a step ahead.

FORBES: Magazine Article