The position of knee point of Phase-frequency characteristic mean value curve is invariant, but the kurtosis of the curve near the knee point decreases.

刚度与质量参数随机时相频特性均值曲线的拐点位置不变，只是拐点附近曲线陡峭度减小。

youdao

Comparing with the adaptive denoising algorithm based on compression ratio and SVD, it avoids calculating the function of image compression ratio and its knee point.

该算法的特点是将能量最小法则和奇异值分解结合起来，在代数空间中建立了一种自适应的图像降噪算法。

youdao

Remember teaching your child to ride a bike. Eventually you let go of the seat and your child went sailing down to sidewalk only to eventually fall and at some point scrape a knee or palm.

记得让你的孩子骑上自行车，因为最终你会忽略了孩子，而你的孩子在外游玩的时候很容易会在人行道上摔倒擦伤膝盖和手心。

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That concept isn't really compelling to the masses until one focuses on the "knee" of this exponential curve -- the point where the perpetual doubling of technological growth skyrockets and negates the linear models of progress that people like economists have relied on for so long.

CNN: STORY HIGHLIGHTS

Police footage showed a man appear to drop to one knee by a car in Clifton Close, Aston, and point a gun at the helicopter, prosecutor Andrew Lockhart QC said.

BBC: Birmingham & Black Country

John's played without point guard Jamal Branch who sprained an MCL in his knee in the loss to Georgetown.

WSJ: St. John's beats Connecticut 71-65