| 词汇 | reactivity | 
| 释义 | reactivity  noun [ U ]  chemistry specialized uk/ˌri.ækˈtɪv.ə.ti/ us/ˌri.ækˈtɪv.ə.t̬i/  (物质的)反应性 a measure of how much a substance reacts when it is mixed with another substance | 
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