请问有人知道衡量粉体流动性的卡尔指数（carr index）是什么意思啊？

请问有人知道衡量粉体流动性的卡尔指数（carr index）是什么意思啊？

不好意思啊，找到英文的，不会翻译吖。。

The Carr index is an indication of the compressibility of a powder. It is calculated by the formula C=100\frac{V_B-V_T}{V_B}, where VB is the freely settled volume of a given mass of powder, and VT is the tapped density of the same mass of powder. It can also be expressed as C=100\times(1-\frac{\rho_B}{\rho_T}), where ρB is the freely settled bulk density of the powder, and ρT is the tapped density of the powder.

The Carr index is frequently used in pharmaceutics as an indication of the flowability of a powder. A Carr index greater than 25% is considered to be an indication of poor flowability, and below 15%, of good flowability.[1]

The Carr index is related to the Hausner ratio, another indication of flowability, by the formula C=100\times(H-1).参考资料：http://en.wikipedia.org/wiki/Carr_index

Carr提出了一种反映粉粒流动性的简便方法。将一定量的粉粒在无任何振动的条件下填装在量筒中，从粉粒的重量和体积计算出其初始松密度Do，通过振动量筒至粉粒体积达恒定(振动频率一般为50～60Hz，振幅为0.05～0.06mm，振动时间1min)，计算此时的压缩松密度Df，压缩指数((Carr指数)即为：