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汉语拼音：yǎn shè

旧称绕射。波在传播过程中经过障碍物边缘或孔隙时发生的偏离直线进行方向的展衍现象。如光通过小孔时，在孔后屏上出现一亮斑，它的亮度向外逐渐减弱。电磁波、声波、水波及物质波都能发生衍射现象。

• Lustre is the integral effect of reflection and diffraction.

  色泽是反射和衍射的综合效果.

• In this case the wave is said to have been diffracted.

  在这种情况下,据说,波发生了衍射.

• Evidently diffraction, as well as interference, is a wave property.

  显然,衍射以及干涉是波特性.

• The diffraction method is appreciably lower than that of the spectroscopic method.

  衍射法的精确度显然低于光谱法的精确度.

• Similar considerations apply to the diffracted rays.

  对衍射光线可采用同样的论证.

• Diffraction, too, occurs in light waves.

  衍射也是由光波产生.

• The uncertainty principle can account for diffraction.

  测不准原理可以说明衍射.

• A - Fe 2 O 3 ( haematite ) was one of the first compounds to be studied by neutron diffraction.

  A-Fe2O3(赤铁矿 ) 是中子衍射最先研究的化合物之一.

• Only with very high - flux reactors is it usually possible to employ diffractometers of high angular resolution.

  只有对非常高通量的反应堆,才可能应用高角分辨率的衍射计.

• They use X - ray diffraction to determine the structures of proteins and nucleic acids.

  他们应用X - 射线衍射确定蛋白质和核酸的结构.

• Radiation protection standards for X - ray diffraction and fluorescence analysis equipment.

  射线衍射仪和荧光分析仪放射卫生防护标准.

• A full vector diffraction theory for optical disk system is described.

  本文以完整的矢量衍射理论分析了光盘光学系统.

• Fresnel diffraction pattern numerical Fresnel diffraction pattern numerical simulation!

  菲涅耳衍射图样数值模拟!

• Solving some diffraction problems by the method will incarnate its unique advantage.

  用这种方法求解某些衍射问题,会体现出它的特殊的优势.

• The obvious question becomes: is this diffraction limited or not?

  现在问题变成: 这个是不是衍射极限的作用?