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  1. Oxford Dictionary

    energy density

    • n.
      the amount of energy stored in a given system, substance, or region of space per unit volume

    • noun: energy density, plural noun: energy densities

    • 釋義

    名詞

    • 1. the amount of energy stored in a given system, substance, or region of space per unit volume these batteries have greater energy density, so they last longer and weigh less