谱的模式识别技术可用于强变化的背景压缩和提取化合物极为弱小的发射特征。

Spectral pattern recognition techniques are employed to suppress the strong and highly varying background to extract the very weak emission features from the compound spectra.

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甲烷是天然气的主要成分，也是温室效应相对比较高的气体之一，它对气候变化的影响远比二氧化碳强得多。

Methane, the primary component of natural gas and among the more potent greenhouse gases, has far more of an effect on climate change than carbon dioxide.

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今年的榜单（提示：以收入排名的财富500强中的美国公司）发生了某些变化，反映和彰显了美国公司重组的趋势。

This year's list -- reminder: the Fortune 500 ranks U.S. companies by revenue -- is packed with changes that reflect and spotlight the trends reshaping corporate America.

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You have extensive properties and intensive properties The extensive properties are the ones that scale with the size of the system.

广延量,和强度量,广延量的值,随着系统的规模变化。

麻省理工公开课 - 热力学与动力学课程节选

Change often signals danger or opportunity and if we are especially tuned-in to change, it helps us survive ? and it helps us pass along our genes. Okay?

变化通常意味着危险和机遇,如果我们能调整适应变化，我们生存能力更强,并且能传递我们的基因，是不是？

耶鲁公开课 - 心理学导论课程节选

So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.

所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。

麻省理工公开课 - 化学原理课程节选