A.波方程解是疊加的通項(xiàng)都是關(guān)于空間和時(shí)間的周期函數(shù)，熱傳導(dǎo)問題解疊加的通項(xiàng)關(guān)于時(shí)間是周期函數(shù)、關(guān)于空間是指數(shù)衰減的
B.波方程解是疊加的通項(xiàng)都是關(guān)于空間和時(shí)間的周期函數(shù)，熱傳導(dǎo)問題解疊加的通項(xiàng)關(guān)于空間是周期函數(shù)、關(guān)于時(shí)間是指數(shù)衰減的
C.兩者疊加的通項(xiàng)關(guān)于時(shí)-空變量都是周期函數(shù)
D.兩者疊加的通項(xiàng)關(guān)于時(shí)-空變量都是指數(shù)衰減函數(shù)