| 词汇 | expansivity |
| 释义 | expansivity noun [ C or U ] physics specialized /ˌɪk.spænˈsɪv.ə.ti/ /ˌek.spænˈsɪv.ə.t̬i/ 膨胀率 the amount that a material increases or decreases per unit of length as the result of a one degree change in temperature The expansivity of copper does not change significantly in this temperature range. 在此温度范围内，铜的膨胀率变化不大。 The expansivities of the two materials become more divergent with temperature. Compare: expansiveness Related words: expandexpansive
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