短語詞組短語quadratic c form 二次形式binary quadratic primitive form 二元二次原型quadratic differential form [數]二次微分形式quadratic -form identity 二次型恒等式semidefinite quadratic form 半定二次形式;[數]半定二次型indefinite quadratic form [數]不定二次型ternary quadratic form [數]三元二次型;三元二次式;三元二次形式real quadratic form [數]實二次型;實二次形式symmetric quadratic form 對稱二次形式;對稱二次型 返回 quadratic form