随机变量的加权平均值是期望值。
The weighted mean of the random variable is the expected value.
在图像灰度化的阶段是采用了加权平均值的方法。
The weight-average method was applied to make the original image to the grayscale image.
实践表明，这里采用“实时加权平均值”模式是可行的和成功的。
The practice shows that the Model Real Time Weight Average adopt...
实践表明，这里采用“实时加权平均值”模式是可行的和成功的。
The practice shows that the Model Real Time Weight Average adopt...
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