high-order curve的用法和样例：
例句
- But the practical usefulness of implicitization is hampered by the complex representation of the implicit equations of high degree rational curves and surfaces.
这方面的研究已经取得了很大的进展，然而由于高次曲线的隐式表示极其复杂，其实际应用价值受到严峻的挑战。 - An approximate quadratic curve has been found to suit the relationship between the tolerances of roundness and their logarithmic fatigue lives with given survivability.
在相同存活率下，孔的圆度公差与孔的对数疲劳寿命呈二次曲线关系。
