A BEST 2

She won the race with a personal best of 2 minutes 22 .

她以2分22秒的个人最好成绩赢得了这项比赛。

It proposed to use standard deviation of sub_image energies to select an optimal wavelet decomposition scale for wood texture , and found out a better selection of filter length at 8 and a best decomposition scale at 2 for wood .

并在试验基础上，提出了以小波分解子图像能量值的标准差进行木材纹理最佳分解尺度的筛选，探索出滤波长度取8、分解尺度取2对充分表现木材纹理特征最为适宜。