unit resistance

例句：

1. 1. The circuit has a unit resistance of 10 ohms.
   电路的单位电阻为10欧姆。
2. 2.The resistance of the wire depends on its length and cross-sectional area.
   电线的电阻取决于其长度和横截面积。
3. 3.The resistance of the material is determined by its molecular structure.
   材料的电阻由其分子结构决定。