This substance can be reduced to a single chemical and oxygen by passing an electrical charge through it.

通电后，这种物质可以被分解为一种单一的化学制品和氧。

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In traditional toxicology a single chemical is tested in one cell or animal to assess its harmful effects.

在传统的毒理学中，评估单一化学品有害影响的测试是在一个细胞或一种动物身上进行的。

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Few chemical or physical properties important in chemical analysis are unique to a single chemical species.

一些化学分析中重要的化学或物理性质只有单一的化学物质才有。

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Each year, a single chemical plant may have report to environmental authorities as many as 50, 000 measurements.

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About half of the profits in the chemical division come from a single chemical, carbonate, according to Andrew Benson at Schroder Salomon Smith Barney.

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Its products--including Synvisc, which is injected into the knee to treat osteoarthritis, and Hylaform, which corrects facial wrinkles--are all based on a single chemical called hyaluronan.

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