查询词典 angle of diffraction

This paper presents a simple physical model of change of mass density for calculating the diffraction intensity of multilayer, which is proved by the experiments of the small angle X-ray diffraction.

提出了这种膜系内密度变化的简单物理模型，通过理论衍射强度计算和小角X衍射实验证明这种模型是合理的。

Based on the relations of the diffraction field and the surface wave, which conclude diffraction factor and interference factor, some relations were conformed such as: the diffraction fringes spatial distribution versus surface wavelength, the fringes half angular width versus the numbers of surface wave covered by laser spots and incidence angle, diffraction intensity versus surface wave amplitude.

通过对衍射因子和干涉因子的分析，得到衍射条纹空间分布与表面波波长的关系、条纹的半角宽度与入射激光光斑覆盖表面波的个数和入射方向的关系、衍射光强度与表面波振幅的关系，并解释了条纹缺级现象。

The changes in phase structure and Curie temperature of the Sm2Fe17 compound after nitrogen absorption were studied by using X-ray diffraction, differential thermal/thermo-gravimetric analyzer and magnetic measurement. The results of X-ray diffraction showed that the diffraction peaks of the Sm2Fe17 compound shifted toward lower angle after nitrogen absorption, and the characteristic peaks of α-Fe were observed. This showed that the unit cell of Sm2Fe17 expanded, the compound was decomposed to a certain extent and the characteristic peaks of α-Fe appeared.

通过X-射线衍射、差热－热重联用仪以及磁测量等手段，研究了Sm2Fe17化合物吸氮后的相结构及居里温度的变化行为。X-射线衍射表明，吸氮后Sm2Fe17化合物的衍射峰向小角度方向偏移，并且出现了α-Fe的衍射峰，这说明吸氮后化合物的晶胞有所膨胀，并且化合物有一定的分解，产生了α-Fe。

In his article entitled "On the manufacture of diffraction gratings and theoretical," the paper wrote,"If every inch with the same number of two engraved lines in contact with photographic copies of the state, the two grating The engraved lines are almost parallel will result in a set of parallel stripes, the direction of the two grating carved exterior angle between the line bisection, and their distance decreases with increasing inclination."

他在一篇题为"关于衍射光栅的制造和理论"的论文中写到"如果把每英寸具有同样数目的刻线的两个照相复制品处于接触状态，使两个光栅中的刻线几乎平行则就会产生一组平行的条纹，其方向将两个光栅刻线之间的外角二等分，而其距离随着倾角的减小而增大"。

The experimental results indicate that when introducing XT-β nucleator into PP, the size of spherulite of the specimen obviously reduces and there appear typical characteristic diffraction peaks of β crystal form in the wide-angle X-ray diffraction pattern....

结果表明：在PP中引入XT-β晶型成核剂后，试样的球晶尺寸明显减小，广角X射线衍射谱图出现了典型的β晶型特征衍射峰；试样的结晶速率、结晶温度明显提高，差示扫描量热法谱图出现α晶型、β晶型2个熔融峰，β晶型含量达到总结晶量的50%～80%；XT-β晶型成核剂可使体系保持较好的力学性能，PP负荷下热变形温度提高15～40℃。

In this paper, the crystallitic structures of Chinese cashmere and fine wool fibers are comparatively investigated by using Wide Angle Xray Diffraction and Differential Scanning Calorimeter methods.

研究结果表明，山羊绒纤维结晶度、α-结晶度高于羊毛纤维，大分子排列规整性好；羊毛纤维的结晶度、α-结晶度分别为山羊绒纤维的81.2％及75.8％。

Methods AH dry powder inhalation was prepared by spray-drying method. Following spray-drying, resultant powders were characterized using scanning electron microscopy and laser diffraction, and the aerosolisation performance was determined using twin-stage liquid impinger. The process conditions were optimized with orthogonal design combined with multi-index test. The powder yield, aerodynamic diameter, angle of repose and respirable fraction were used as indices for orthogonal design.

采用喷雾干燥法制备盐酸氨溴索干粉吸入剂，采用双层液体碰撞器测定盐酸氨溴索干粉吸入剂体外沉积率，扫描电镜观察粉粒的形态，激光粒度测定仪测定粒径大小，以产品收率、粉末的空气动力学径、休止角及体外沉积率为考察指标，通过正交设计结合多指标综合评价法优化最佳制备工艺。

Another important application of diffraction theory is the study of the far field divergence angle of a collimated light beam.

衍射理论的另一个重要应用就是研究准直光束的远场发散角。

A holographic pattern, formed adjacent to the material layer on a surface of at least one of the transparent substrates, changes a divergence angle of the light by diffracting or transmitting without diffraction the incident light according to change of the refractive index of the material layer.

与材料层相邻地形成在至少一个透明基底的表面上的全息图案根据材料层的折射率的改变通过衍射入射光或者无衍射地透射入射光来改变光的发散角。

The design principle of the laser receiver with wide FOV for the laser command guidance and laser-beam riding guidance is introduced. A mathematic model of receiving light field is presented. The formula for the viewing angle of the detecting optical system was derived according to the diffraction light field of the oblique incidence parallel light. Taking a detecting optical system with the collecting objective for example, the design characteristic that the receiving optical system needs not only an extra large relative aperture but also an unvignetting receiving performance is discussed on the premise of meeting the requirement of 1064nm WFOV laser receiver.

介绍激光指令制导和激光驾束制导的大视场激光接收机的设计原理，给出接收光场的数学模型，由斜入射平行光的衍射光场推出探测光学系统的视场角公式，根据1064nm大视场激光接收机技术要求，以聚光物镜型探测光学系统为例，探讨接收光学系统既须具备特大相对孔径，又须具备无晕接收性能的设计特点，采用窄带干涉滤光镜进行光学滤波降噪。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。