短語詞組短語imaginary kingpin axis 虛主銷imaginary number axis 虛軸imaginary semi -axis [數(shù)]虛半軸imaginary axis refractive index 虛數(shù)折射率the imaginary axis 虛軸imaginary axis root 虛根imaginary axis element 虛元素imaginary axis frequency response 假想頻率響應(yīng)imaginary axis hypersphere 虛超球面 返回 imaginary axis