coefficient of local friction

例句：

1. 1. The coefficient of local friction is a critical factor in determining the stability of a material.
   局部摩擦系数是决定材料稳定性的关键因素。
2. 2. In order to improve the performance of a machine, it's important to understand the coefficient of local friction.
   为了提高机器的性能，了解局部摩擦系数是很重要的。
3. 3. The coefficient of local friction can be affected by many factors, including temperature and humidity.
   局部摩擦系数会受到许多因素的影响，包括温度和湿度。