chemical substance是什么意思 chemical substance怎么读
chemical substance的英文翻译是什么意思，词典释义与在线翻译
Noun:- material produced by or used in a reaction involving changes in atoms or molecules
chemical substance的用法和样例
- Ammonia is a chemical substance.
氨是种化学物质。 - This substance reacts twice faster than that one.
这种化学物质比那种反应快两倍。
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