| 单词 | chemical reaction |
| 释义 | chemical reaction [`kem·i·kǝl rē`ak·shǝn] CHEMISTRY A change in which a substance (or substances) is changed into one or more new substances; there is only a minute change, Δm, in the mass of the system, given by ΔE =Δmc2, where ΔE is the energy emitted or absorbed and c is the speed of light. |
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