Amy Chang-chien, coordinator of this solar project, pointed out that traditional solar system has a centralized inverter to change direct current to alternating current.

万佛圣城太阳能计划协调人张简嘉乃指出，传统的太阳能系统采用中央逆变器，将直流电转换成交流电。

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Diodes are electronic devices which rectify alternating current to direct current.

二极管是将交流电整流成直流电的电子装置。

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The system generates a direct current, so using it to power DC devices locally is more efficient than switching to the alternating current needed to feed it back to the grid.

该系统产生的电流为直流电，所以用来驱动本地的直流点装置比将其转化为交流电输入电网来的更有效率。

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Traditional inverters gather power from all or most of the panels in an installation and use transformers, capacitors and switches to change it from direct current to alternating current.

FORBES: Inverters: Solar's Next Star?

Even Thomas Edison bet badly, as in his development of direct-current electricity that proved inferior to alternating current.

WSJ: Boeing Shows How Innovation Can Be Messy

One of the considerations was the relative safety of direct current - the first electric chair seems to have been built (and then used) to prove that alternating current was more of a killer.

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