The use of multimedia courseware on the "the edge of a knife" in teaching can achieve the goal and effect that cannot be gained by the traditional education.

在教学中把多媒体课件用到教学的“刀刃”上，能达到传统教育不能达到的目的和效果。

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We also analyse different interpolating methods , knife edge, gray-draw, height, angle which effect Modulated Transfer Function(MTF).

我们主要分析了不同的插值方法，刀口，灰度拉伸，高度，角度对MTF的影响。

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