The BMI is really just a height to weight ratiochart that is based on thousands of observations about the relationship between height and weight.
事实上BMI只是一个基于数千个关于身高和体重关系观察的身高体重比率表老外就是这么表达的？
2
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。
3
Taxes are expected to rise to 19.6% of GDP in 2020 if all the tax cuts are extended; raising rates on the rich would lift the ratio to only 20% (see chart).