Model CR118 has a Fraction to Decimal Conversion Chart and Trigonometric Ratio Equations etched on the front side.

CR118模型的正面刻有一个分数到十进制的转换图和三角比公式。

youdao

Model CR118 has a Fraction to Decimal Conversion Chart and Trigonometric Ratio Equations etched on the front side.

CR118模型的正面刻有一个分数到十进制的转换图和三角比公式。

youdao