These are physical changes while those are chemical changes.

这些是物理变化而那些是化学变化.

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Chemical changes have made a great many plants into coal, oil, and gas.

化学变化使得大量植物变成煤 、 石油和煤气.

辞典例句

Some kinds of acids react on metals to cause chemical changes.

有几种酸对金属起作用,会引起化学变化.

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These crystals may help begin the chemical changes that result in the destruction of ozone.

这些晶体可以有助于触发导致臭氧受到破坏的化学变化.

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AIM : To explore the chemical changes in compatibility of Radix Bupleuri with Radix Paeoniae Rubra.

目的: 研究柴胡和赤芍配伍后的成分变化.

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All changes of matter fall into two broad classes: physical and chemical changes.

物质变化分为两大类: 物理变化和化学变化.

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Some perfumes are also from the chemical changes in ultraviolet radiation, and cause skin inflammation.

一些香水受到紫外线照射还会起化学变化, 并引起皮肤炎症.

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As aof a content matter, so internal coatings to prevent chemical changes is of vital importance.

由于所装入内容物质不同, 所以内部涂料以防止化学变化是极为重要的.

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The chemical changes in the processing are explained in particular.

并描述了加工过程中的化学变化特征及其在生产中的应用.

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