短語詞組短語kinetic energy conservation and transformation 動(dòng)能守恒與轉(zhuǎn)化energy conservation and transformation law 能量守恒與轉(zhuǎn)化定律energy transformation and conservation 能量轉(zhuǎn)化和守恒energy transformation and conservation law 能量轉(zhuǎn)化及守恒定律 返回 energy conservation transformation