The adsorbed atomic oxygen is the common oxygen species for both ethylene epoxidation and combustion; molecular oxygen plays no direct role in either two reactions.
氧在表面存在三种吸附态,其中原子态吸附氧是乙烯环氧化和深度氧化的活性物种,分子态氧对两个反应不起直接作用。
Dark matter is likely to be composed of one or more species of sub-atomic particles that interact very weakly with ordinary matter.
暗物质可能由一种或多种和普通物质相互作用很弱的亚原子粒子组成。
The second atomic species has a characteristic emission peak that substantially matches the absorption edge of the detector.
第二原子种类具有实质上匹配检测器的吸收边沿的特征发射峰值。
Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify.
我在这抬头看看然后离开,那就是氢原子,那就意味着,我可以测定,气相种类的光谱并且运用那个信息来鉴定。
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