Through the adjustment of sound wave related parameter, we find the relationship of sound pressure, frequency and cleaning effect, and the best frequency.
调节声波相关参数，得出声波的频率和声压对清灰效果的影响关系，并找到最佳频率。
In the paper, Asymmetric quadric loss function is put forward under Normal assumption, adjustment parameter is defined, and its best value is calculated which minimizes the total quality lose.
本文讨论了在n维非对称的质量损失函数下，调整参数设计的可行性，求出了质量损失的最小解。
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