One of the physical parameters of a medium, equal to the ratio of the electric displacement D to the electric field strength E at any point in it…
单词 | θ78017 |
释义 | the world > matter > physics > electromagnetic radiation > electricity > [noun] > static electricity > constant (1) permittivity of free space1938 One of the physical parameters of a medium, equal to the ratio of the electric displacement D to the electric field strength E at any point in it… |
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