expansion efficiency的用法和样例：
例句
- Water has a variable coefficient of expansion.
水的膨胀系数是可变的。 - 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。 - After analysis,we earn the conclusion that expansive force of Gypsum Breccia in complete expansion method is bigger than that in balance load method.
试样密度与含水率对膏溶角砾岩轴向膨胀率起决定作用。
