这是一个极不错的数字，还没有到衍射的极限。
This is an excellent figure, not that far from diffraction limited.
这是由于光的衍射造成的。
另一个重要的波现象是衍射。
衍射法的精确度显然低于光谱法的精确度。
The diffraction method is appreciably lower than that of the spectroscopic method.
一个基本的极限是由望远镜衍射园面的大小决定的。
A fundamental limit is imposed by the size of the diffraction disk of the telescope.
但晶胞常数，衍射峰的数目和强度却发生了变化。
But cell constant, diffraction site and intensities have been changed.
用X射线单晶衍射分析法测定了该配合物的晶体结构。
The crystal structure was determined by X ray single crystal diffraction analysis.
低能电子衍射仪(LEED)是研究单晶表面结构的有效工具。
LEED is an effective instrument for the study of surface structures of single-crystals.
然而，衍射问题的计算一直是十分困难的工作。
However, it is a difficult problem to complete diffraction calculation correctly.
研究了等衍射效率全息图的读出方法。
Studied the read method for equal diffraction efficiency image.
标题配合物的晶体结构已用X射线衍射确定。
The crystal structure of the title complex was determined by X-ray diffraction.
文中给出了无衍射光束的理论及实现方法。
Theory and generation method of nondiffraction beam have been given.
近年来，人们发现一种可以突破衍射极限的新思路。
In recent years, a new idea is found to be beating the diffraction limit.
用X射线单晶衍射仪测定了它的晶体结构。
The crystal structure was determined by X-ray diffraction method.
衍射则是电波绕射传播到遮蔽区的现象。
The diffraction effect is the phenomenon of wave propagation into shadow region.
本文评述了十余年来单晶X射线衍射技术的进展。
The technical progress on X-ray diffraction for single crystal during last ten years was reviewed.
与现行的XRD衍射法相比，该方法具有简单方便且准确性高的特点。
Compared with XRD, the new method is more simple and accurate.
与现行的XRD衍射法相比，该方法具有简单方便且准确性高的特点。
Compared with XRD, the new method is more simple and accurate.
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