Two concepts frequently described in green chemistry are atom economy and chemical specificity, indicating that green chemistry is the chemistry about reaction and reaction efficiency.

绿色化学中经常讨论的两个概念是原子经济性和化学专一性，这说明绿色化学是关于反应和反应效率的化学。

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The efficiency of solid-oxide fuel cells is limited by the electrolyte's ability to transport oxygen ions, which must pass from atom to atom through the solid electrolyte.

固态氧化物燃料电池的效率受限于电解质传送氧离子的能力，而氧离子要在固态电解质的原子间传递。

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So it is not necessary to use a broad-band laser to guarantee excitation efficiency for an atom with hyperfine split levels.

因此，在这样激光功率条件下，为提高原子激发效率而增加激光谱线宽度的做法并不是必要的。

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Building on the device momentum and industry-leading power-efficiency of the award-winning Atom processor Z2760, Intel's first quad-core Atom SoC ("Bay Trail"), will be the most powerful Atom processor to-date -- doubling the computing performance of Intel's current- generation tablet offering and providing the ecosystem with a strong technology foundation and feature set from which to innovate.

ENGADGET: Intel launches dual-core Clover Trail+ mobile Atom processors

The product is based on Intel's leading-edge 22nm process and an entirely new Atom microarchitecture that will help enable increased smartphone performance, power efficiency and battery life.

ENGADGET: Intel launches dual-core Clover Trail+ mobile Atom processors