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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To ensure low leakage current and low dielectric absorption, the feed back capacitor should be made of a suitable dielectric material such as poly styrene, polypropylene, or Teflon.

为了保证低泄漏电流和低介电吸收，反馈电容器应当由合适的介电材料(如聚苯乙烯、聚丙烯或聚四氟乙烯)制成。

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A new way to generate stable ac current is found with feed back control system by single chip microcomputer. So a new high power ac current regulator is developed.

再用单片机组成反馈控制系统，从而找到了交流稳流的新方法，研制出一个大功率交流稳流电源。

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Without a much improved ratio of manufacturing to services and the dramatic improvement which that would bring to overall unemployment, the current recession will be much prolonged and will probably "feed back" unto itself as factors that defined the original downturn, such as credit defaults and mortgage delinquencies, recur.

CNN: Commentary: Panic anniversary no reason for joy