the coefficient of expansion

• 膨胀系数

the coefficient of expansion的用法和样例：

例句

1. Water has a variable coefficient of expansion.
   水的膨胀系数是可变的。
2. The thermostat is based on the fact that different metals have different coefficients of expansion.
   恒温器是以不同的金属有不同的膨胀系数这一事实为根据的。