approximate formula

• 近似公式

approximate formula的用法和样例：

例句

1. This article uses Taylor Progression to figure out the approximate formula of the forming errors of Archimedes gear hobs.
   利用泰勒级数导出了阿基米德齿轮滚刀造形误差的近似公式。
2. Finally, an approximating formula which is applicable for the whole frequency range is given.
   最后给出了在全频率范围适用的声阻率近似公式。