物质的分类是指根据对象的性质、特征等对其进行分类。物质分类的方法有三种：单一分类法、交叉分类法、树状分类法。
阐述了我国标准物质的分类、分级、编号及其管理。
The classification, grade, numbering and administration of reference materials in China is explained.
厌氧菌被分类为那种靠消耗有机物质而存活的细菌。
Heterotrophic bacteria are a category which includes all bacteria that survive by consuming organic matter.
通过展示有机器官，自然物体和我们构建的物质世界之间的相似与差别，Piccinini改变了我们在生活中绝对的分类方式。
By displaying the similarities and differences between the organic, natural and our constructed material world, Piccinini challenges our classification of life.
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