efficiency of a statistic的意思|示意

The method of minimum interclass variance needs to compute conic statistic in segmenting image, which costs a large computation but has less efficiency.

最小类内方差法分割图像时需要计算二次统计量，运算量大，效率不高。

This article establishes a statistic model to calculate the dust-removal efficiency of setting chamber. It also introduces the method of computer simulating calculation.

该文建立了沉降室除尘效率的统计模型，并介绍了计算机模拟计算的方法。