coefficient between layers

例句：

1. 1. The coefficient of friction between the two surfaces is 0.3.
   两个表面之间的摩擦系数是0.3。
2. 2.The weight of the object can be calculated using the given coefficient.
   可以使用给定的系数来计算物体的重量。
3. 3. The coefficient of thermal expansion for this material is higher than that for other materials.
   这种材料的热膨胀系数高于其他材料。