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Conductivity (en)  

定义

  • $\ extit{Conductivity}$ is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity. $$\\mathbf{J} = \\sigma \\mathbf{E}$$ Where $\\mathbf{J}$ is electric current density, and $\\mathbf{E}$ is electric field strength.

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注释，说明

  • "Conductivity" is a scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density. For an isotropic medium the conductivity is a scalar quantity; for an anisotropic medium it is a tensor quantity.

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https://vocab.sentier.dev/units/quantity-kind/Conductivity

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