conductivity

Metals have high electrical conductivity because their outer electrons are free to move through the lattice structure.金属具有高导电性，因为它们的外层电子可以在晶格结构中自由移动。

The thermal conductivity of a material determines how rapidly heat flows through it under a temperature gradient.材料的热导率决定了热量在温度梯度下流过它的速度。