We know the constitution of mineral through chemical analysis.

我们通过化学分析知道矿物的构成。

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Through chemical reaction, hydrocarbons can be created.

通过化学反应，可以产生碳氢化合物。

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Neutralize waste solutions in contractor-supplied equipment and discharge through chemical drain to site treatment system.

在承包商供应的设备中中和废液并通过化学试剂排放设备排放到处理系统。

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Nicotine replacement products provide the body with small amounts of the chemical through forms other than cigarettes.

VOA: special.2010.03.09

The process calls for the chemical to be pushed through the small holes of a spinneret.

VOA: special.2011.03.01

They might sound like the stuff of science fiction, but at their most basic level these medical micro-robots are man-made protein "machines" that produce movement through chemical reactions.

CNN: Nanobots get to the heart of the matter

Unlike conventional cameras, our femto camera captures an image as one thin slice at a time of one-dimensional space using a "streak tube, " a laboratory instrument that is commonly used by chemists to study light passing through chemical samples.

CNN: A camera that can see around corners

But until recently, the only way to make lasers powerful enough to blow something tough into pieces was to use a chemical laser, which produces its energy through a chemical reaction.

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