Efficient power conversion circuitry can minimize the loss to save energy and protect environment.

高效的功率转换电路把损耗降到最低，节能环保。

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The highly efficient power conversion circuit not only minimize losses, but also save energy and protect environment.

高效的功率转换电路把损耗降到最低，节能环保。

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The proton exchange membrane fuel cell (PEMFC) is one of the most promising power sources for future electric vehicles due to it's high power density and energy conversion efficient.

质子交换膜燃料电池（PEMFC）具有较高的功率密度和能量转化效率，最有可能成为电动汽车的动力源。

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Back on July 27th, I wrote about how surprised I was to find shares of Power-One (PWER), a provider of renewable energy and energy-efficient power conversion and power management solutions such as photovoltaic inverters used in solar power applications, trade down after reporting blow-out second quarter results.

FORBES: Explain This One, Part 2

Making the conversion with integrated circuits is much more efficient, with as little as 20% of the power being lost.

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