短語詞組短語derived demand curve 引申需求曲線derived d curve 導(dǎo)函數(shù)曲線first derived curve [數(shù)]一堦導(dǎo)曲線derived moment -rotation curve 導(dǎo)出瞬時(shí)鏇轉(zhuǎn)曲線 返回 derived curve