Comparing the relative power of such a diverse group is slippery business.

要比较这些身份如此悬殊的人的权力大小可不是件容易的事。

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Again the performance governor only runs the highest available frequency, and you can see how great a difference this makes in power consumption by comparing the solid lines.

同样，performance调控器只在尽可能高的频率运行，您可以通过比较图中的实线看出这在电能消耗上导致多大的差异。

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Converting currencies by purchasing power, rather than market rates, is useful when comparing living standards in different countries.

对比不同国家的生活标准时，采用购买力换算货币比采用市场汇率显得更有意义。

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At the event, HGST is comparing the power consumption between a helium-filled drive and an equivalent air-filled drive side-by-side, demonstrating a reduction in power consumption for the helium-filled drive of 23 percent.

ENGADGET: HGST develops helium-filled, high-capacity hard drives: no, they won't float away

Comparing backup and primary power solutions is like comparing rotary phones and smart phones.

FORBES: Backup Generators Are the Bad and Ugly of Decentralized Energy

The Big Mac Index uses Purchasing Power Parity (PPP) in comparing the price of the ubiquitous Big Mac across countries relative to its price in the USA. PPP refers to the idea that exchange rates across two countries should be equal to the relative price of a basket of goods and services in both countries.

FORBES: Big Mac Index: Indian Rupee Most Undervalued Currency In The World