electron gas

例句：

1. 1.The electron gas is a crucial component in the operation of electronic devices.
   电子气体是电子设备运行的关键组成部分。
2. 2. In the field of quantum mechanics, the electron gas model has been widely used to study the behavior of atoms and molecules.
   在量子力学领域，电子气体模型被广泛用来研究原子和分子的行为。
3. 3. The electron gas is responsible for the electrical conductivity of metals.
   电子气体负责金属的电导性。