expansion efficiency的用法和樣例：
例句
- Water has a variable coefficient of expansion.
水的膨脹系數是可變的。 - The thermostat is based on the fact that different metals have different coefficients of expansion.
恒溫器是以不同的金屬有不同的膨脹系數這一事實(shí)為根據的。 - After analysis,we earn the conclusion that expansive force of Gypsum Breccia in complete expansion method is bigger than that in balance load method.
試樣密度與含水率對膏溶角礫巖軸向膨脹率起決定作用。
