| 单词 | diffusivity | 
| 释义 | Word Frequency diffusivity(ˌdɪfjuːˈsɪvɪtɪ) noun 1.  a measure of the ability of a substance to transmit a difference in temperature; expressed as the thermal conductivity divided by the product of specific heat capacity and density  2.  physics a.  the ability of a substance to permit or undergo diffusion  b.   another name for diffusion coefficient  3.   another name for diffusion (sense 5)   | 
	
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