The circular region F-norms in low frequency band of wavelet transform is used as color feature of the image and the energy ratio of high frequency band is used to form texture descriptor.

颜色特征采用整数小波低频系数矩阵中环形区域的F -范数，纹理特征则采用高频部分的能量比值。

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The left to right shunt rate (f) and the transverse sectional area of ductus arteriosus (a) were calculated by color Doppler flow convergence method in 20 patients with patent ductus arteriosus.

用彩色多普勒血流会聚法对20例动脉导管未闭患者的左向右分流率F进行测定，并根据F值计算出动脉导管的横截面积A。

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The same color codes apply to exterior objects, other aircraft, and phenomena detected by the F-35 "s sensors."

相同的颜色标记方式还应用到了外部目标，其它飞机，以及F - 35传感器探测到的内容。

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Supporting the diamond is a neck-piece made of 74.77-carat TCTW D-F color alternating round brilliant and emerald cut diamonds.

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The crown is topped with the Montblanc diamond (0.05 ct, F-G color).

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First it's the roar of F-16 jets from a nearby NATO base, then a hailstorm, then torrential rains that change the color of the desert so that previous shots won't match new ones.

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