If customers are becoming more sensitive to value for money and pricing, too, the overall effect is to raise the minimum scale for a school needed simply to break even.

如果顾客对于学费的价值也更加敏感，那么整体的影响就是学校必须提高损益平衡的最小经济规模。

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First, nonlinear stack filter is applied to estimate the maximum and minimum of noise-free image's gray scale value in a local region.

首先非线性堆滤波器用于求出图象某象素点邻域内的灰度最大值与最小值的最优估计，然后以此两估计值之差代替原象素点灰度值。

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First, nonlinear stack filter is applied to estimate the maximum and minimum of noise-free image's gray scale value in a local region.

首先非线性堆滤波器用于求出图象某象素点邻域内的灰度最大值与最小值的最优估计，然后以此两估计值之差代替原象素点灰度值。

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