光波在遇到障碍物时，偏离直线方向传播的现象称为光的衍射 但是衍射是有条件的，只有当障碍物的大 小与光波波长十分相近，或略大于光波波 长时，衍射才能发生。
Analyzed X-ray directional principle according to X-ray diffraction effect of crystal, and has recommended concrete orientation to operate the course.
根据晶体的X射线的衍射效应分析X射线的定向原理,并介绍了具体的定向操作过程。
参考来源 - 光通信用高品质晶体元件制造技术研究The resolution of the imaging system is limited by the optical diffraction effect. The quest for higher angular resolution in astronomy and earth observation will inevitably lead to larger and larger apertures.
光的衍射效应限制了光学成像系统的分辨能力,要获取高分辨率的天文和对地观测图像,系统的口径就要不断增大。
参考来源 - 光学稀疏孔径成像系统原理与位相误差研究·2,447,543篇论文数据，部分数据来源于NoteExpress
为了定量描述波带板的衍射效应，定义了临界衍射距离。
Meanwhile, a critical diffraction distance was defined to describe the diffration effect of the FZP quantitatively.
与衍射效应产生的色散相比，透镜本身的折射率色散很小。
The dispersion caused from the chromatic aberrations of lens is smaller than that from diffraction effects of it.
根据这种自衍射效应，归纳了四种记录和光固定实验组合方案。
Based on this self diffraction effect, four kinds of recording and optical fixing procedures are set up.
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