化学燃料动力火箭可以提供克服地球引力所必须的强大推进力。

Chemical rockets have the high thrust necessary to lift rockets into space, overcoming the Earth's gravitational pull.

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但是直到天然气和石油的价格大幅上涨之后，全球化学工业才有了开展煤炭气化业务的动力。

But there had been little incentive for the global chemical industry to gasify coal until prices began soaring for natural gas and oil.

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加州大学欧文分校的的科学家菲利普·科林斯说，尺寸如盐颗粒大小的电池能够给传感器提供动力，为那些用于检测病毒和化学物质等传感器提供动力。

Batteries that are the size of a grain of salt — or smaller — could power sensors that detect viruses, chemicals and more, said Philip Collins, a scientists at the University of California, Irvine.

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So, that's kinetics -- how fast a reaction will go, and from the perspective of someone who's a biochemist, I'm interested in kinetics and enzyme kinetics, and thinking about molecules that catalyze reactions in the body.

所以这就是动力学，一个反应发生的有多快,从一个生物化学家的角度,我喜欢研究动力学,酶动力学。

麻省理工公开课 - 化学原理课程节选

So, let's look at dynamics, reactions between chemicals.

因此，我们来看看化学品之间的反应动力学。

麻省理工公开课 - 固态化学导论课程节选