本文对二维零位原子光栅的原理，评价指标，评价指标极限的计算，作了详细介绍。

The paper mainly discusses the principle of two dimension zero position grating and its evaluation index, gives detail discussion of evaluation limit.

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摘要 ： 波前像差是衍射光栅的重要技术指标， 它直接影响光栅的分辨率。

Abstract : As one of the important technical specifications of diffraction grating, diffraction wave front aberration directly affects the grating resolution.

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波前像差是衍射光栅的重要技术指标，它直接影响光栅的分辨率。

As one of the important technical specifications of diffraction grating, diffraction wave front aberration directly affects the grating resolution.

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