短語詞組短語integral -value 整數(shù)值integral intermediate value formulas 積分中值公式integral mean value 積分均值integral boundary value problem 積分邊值問題square integral mean value 平方積分均值integral mid value theorem 積分中值定理integral main value 積分主值integral mean value function 積分中值函數(shù) 返回 integral value