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。
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。
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。
The coincidence efficiency was investigated. This measurement can be used to analyze absolute content of gas atom, even of isotopes. This method is more reliable than the Time-Of-Flight spectra.
根据实验参数进行了符合效率计算，该实验方法可用于微量气体元素甚至同位素的绝对含量分析，较单独的飞行时间谱更加可靠。
With increasing number of carbon atom of alkyl group in the ionic liquid the extraction efficiency of lithium obviously increased.
锂的萃取率随离子液体中烷基碳原子数的增加而增加。
With increasing number of carbon atom of alkyl group in the ionic liquid the extraction efficiency of lithium obviously increased.
锂的萃取率随离子液体中烷基碳原子数的增加而增加。
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