A distinct substance or compound, esp. one which has been chemically prepared or purified. Frequently in plural.
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| 单词 | θ71539 |
| 释义 | the world > matter > chemistry > chemical substances > [noun] > chemicals (10) chemical1649 A distinct substance or compound, esp. one which has been chemically prepared or purified. Frequently in plural. Subcategories:— chemicals used in agriculture (3) — others (4) — mixture of chemicals (2) |
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