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		per·mit·tiv·i·ty AHD[pûr'mĭ-tĭvʹĭ-tē] D.J.[ˌpɜːmɪˈtɪvɪtiː]K.K.[ˌpɝmɪˈtɪvɪti]n.(名词)【复数】  per.mit.tiv.i.ties 【物理学】  - A measure of the ability of a material to resist the formation of an electric field within it. Also called  dielectric constant ,relative permittivity 介质常数,电容率:一种物质抵制在其内部建立的电场能力的量度 也作  dielectric constant,relative permittivity
 
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