| 1. | This book is about chemicals and plants .
本书所写的是化学药剂和植物。
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| 2. | The chemical beds are provided in duplicate .
化学垫是成对设置的。
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| 3. | Chemical energy may be converted to heat .
化学能可以转化为热能。
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| 4. | Mutation are produced by a number of chemicals .
许多化学试剂能产生突变。
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| 5. | Chemical absorption is seldom reversible .
化学吸附物很难解吸。
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| 6. | Several chemicals are well known teratogens .
有一些化合物已知是致畸物质。
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| 7. | Metabolism is a complexity of chemical reaction .
代谢是各种化学反应的综合。
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| 8. | Chemical control is the last resort .
化学防治是最后的措施。
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| 9. | The poisonous chemicals are called mycotoxins .
这种有毒化学物叫做菌霉毒素。
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| 10. | The chemical destroys botulinus .
该化学物质能消灭肉毒杆菌。
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