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1)  diffraction frequency spectrum
衍射频谱
1.
The beam parameters can be calculated accurately by the mode field distribution of the waveguide, or by the diffraction frequency spectrum distribution in far field which is measurable exactly in the experiment.
对于傍轴光束 ,提出了介质平面波导衍射场的近场模场半宽度、远场发散角半宽度和光束传输因子M2 等光束参量之间满足简单的关系式 ,三个光束参量均可直接由波导模式场分布精确计算 ,或由可实际精确测量的远场衍射频谱分布精确计算。
2)  curve of XRD
衍射谱线
1.
The results showed that marked changes took place on the curve of XRD after Fe50B50 and Fe60B40 were milled.
用QM—4H行星式球磨机机械合金化Fe—B二元粉末,研究了机械合金化过程中粉末结构的变化,结果表明,Fe_(50)和Fe_(60)B_(40)经机械球磨后,其X射线衍射谱线发生显著变化。
3)  angular spectrum diffraction
角谱衍射
1.
Theoretical analysis for numerical reconstruction of off-axis digital hologram based on angular spectrum diffraction;
基于角谱衍射的离轴数字全息数值重建理论分析
4)  diffraction spectrum
衍射光谱
1.
Diffraction grating is used to get the diffraction spectrum of the mercury lamp with spectrum images acquired by array CCD,and to process the acquired image by computer program to get the wavelength and frequency of the mercury lamp diffraction spectrum.
运用衍射光栅得到汞灯的衍射光谱线,利用面阵CCD采集光谱图像,编写程序对采集图像进行处理,得出各谱线的波长和频率。
5)  diffraction profile
衍射谱
1.
A new kind of technology for the peak separation of X-ray diffraction profiles;
X射线衍射谱的一种分峰新技术
6)  diffraction spectrometer
衍射谱仪
补充资料:倍频谱带
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CAS号:

性质:又称倍频谱带。红外光谱分析中的一种谱带;指某个吸收频率为基谐振动频率的2倍或3倍时的吸收带。它的产生是由于两个原子核间的库仑排斥力使振动频率发生了异常变化的结果。泛频带的吸收强度往往很低,因此这个吸收带有时测不出来。

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