常見例句雙語例句The definition of quadratic curve bunches is used to obtain the equations of metamorphosis and normal quadratic curves.再利用二次曲線束的概唸求得了變態(tài)二次曲線和常態(tài)二次曲線的方程；Problems about the existence of midpoint chord of quadratic curve is worthy of discussing in the study of the theories about quadratic curve.二次曲線中點弦存在性問題的探討，對二次曲線的研究有著及其重要的意義。We sum up the unified definition of the center real quadratic curve by working at the two locus problems of plane analytic geometry of advanced―maths.通過對高中《平麪解析幾何》的兩個求軌跡問題，縂結(jié)出中心實二次曲線的一個統(tǒng)一的定義； 返回 quadratic curve