biquadratic curve

• 四次曲线

biquadratic curve的用法和样例：

例句

1. 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。