First, we standardized the size, variance of gray scale and mean value of gray scale of the motor vehicle plate images.
首先，对机动车号牌图像进行大小、灰度方差、灰度均值的标准化处理。
For the litter size, variance components of maternal gametic effects were about twice than that of paternal gametic effects.
而在产羔数上，母系印迹效应方差大约是父系印迹效应方差的两倍。
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