The best order of approximation by (N, P) means of T-F series is discussed, and asufficient condition to reach this order is found.

讨论了算子（N，P）的最佳逼近阶以及达到此逼近阶的一个充分条件。

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Operation evaluations including the tibial and femur angle(T-F angle) and Knee Society Score System(KSS) were followed-up.

对比手术前、后股胫角变化，采用KSS评分评价手术疗效。

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Operation evaluations including the tibial and femur angle(T-F angle) and Knee Society Score System(KSS) were followed-up.

对比手术前、后股胫角变化，采用KSS评分评价手术疗效。

youdao