The response of the polymer melt behavior of orientation for axial vibration of screw in short pipe extrusion die head was studied by the light scattering technology. 利用光散射测量方法研究了短圆管挤出模头中聚合物熔体取向行为对螺杆轴向振动的响应。
The expression of optic axial angle and ray axial angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave. 利用光波面和光波法线面的曲线方程,得出了光波面上光轴角和光线轴角的表达式。
The impeller of LGY axial flow fan adopts high-quality aluminium alloy, and has the characteristics of light weight, high-temperature resistance, rust protection and corrosion resistance. LGY轴流风机叶轮采用优质铝合金为材料,具有重量轻、耐高温、防锈抗腐蚀等特点。
Axial resolution in optical coherence tomography ( OCT) imaging is determined by the coherence length of light source and the beam-focusing condition. 光学相干层析成像(光学相干层析成像术)的轴向分辨力由光源带宽和探测光束的聚焦条件共同决定。
It is shown that the spectrum of the axial points in the focused field is quite different from that of the incident light. 结果表明与入射光的光谱比较,聚焦光场某些轴上点的光谱发生很大的变化。
Scattering characteristics of bundle of rays, characteristics of bundle of rays and characteristics of spatial distribution of axial light intensity are analyzed. 分析了光束的散射特性、光束特征和轴向光强的空间分布特性。
The phenomena of spectral anomalies in the axial points of the focused field, was investigated when partially coherent light is focused by a lens with chromatic aberration. 研究了色差透镜聚焦宽频带部分相干光,观察到在聚焦光场轴上点出现的光谱奇异现象。
Based on the accurate expression of light intensity at the transverse plane and the rigorous diffraction formulae, the characteristics of axial light intensity of Gaussian beam diffracted by a wavelength order circular aperture are investigated. 基于横截面上精确表述的光强和精确的衍射场公式,对高斯光束经波长级圆孔衍射的轴上光强特性进行了研究。
Through the curve of half high width of normalized axial intensity via detector effective radius and incoherent incidence light effective radius, the optical sectioning property of confocal microscope was gotten. 在共聚焦显微镜中,通过系统的归一化轴向光强半高宽与探测器有效半径和非相干光源有效半径的关系曲线,获得非相干光源照明下系统光学层析能力的变化规律。
Thus the assumption commonly used in previous single particle theories that the axial electron velocity is approximately equal to the speed of light no longer remains exact. 后者由于电子未扰轨道纵向速度比较低,已有的单粒子理论中所作的电子纵向速度约等于光速的假设不再成立。
Axial light intensity distribution of limited Gaussian beams in atmospheric turbulence 大气湍流中受限高斯光束的轴向光强分布
The effect of the Fresnel number of the lens on the axial focused light distribution is also discussed. 本文还讨论了透镜的菲涅尔数对聚焦光场分布的影响。
While for the Gaussian diffracted beams with w 0/ R < 1, the axial light intensity exists specifically evolutive law. The number of extrema is reduced step by step and finally disappeared with the initial Gaussian half width diminishing. 而对于w0/R<1的这一类高斯衍射光束,轴上光强存在特定的演化规律:随着初始高斯半宽度的减小,轴上光强极值个数逐步减少直至全部消失。
Axial Light Intensity Characteristics of Gaussian Beam Diffracted by a Wavelength-Order Circular Aperture 高斯光束经波长级圆孔衍射的轴上光强特性
The results show that the axial light intensity characteristics of Gaussian diffracted beam are decided by the initial Gaussian half width w 0 and the radius of wavelength order circular aperture R. 结果表明,高斯衍射光束的轴上光强特性取决于初始高斯半宽度w0和波长级圆孔的孔径R。
By using collodion embedding and thin sectioning at coronal and axial planes in ten cadaver heads, structure and location of the LSW were observed with light microscope. 用火棉胶包埋10例标本,对蝶窦外侧壁相关结构的区域进行冠状、水平位的薄层切片,观察各层面结构和位置。
Maglev Axial flow blood pump has many advantages, such as small size, light weight and it can effectively solve the problem of thrombosis and hemolysis, etc. So it has been the hotspot and focus of the world-wide research on cardiac assist device. 轴流式磁悬浮心脏泵以其体积小,重量轻,能有效的解决血栓和溶血问题等优点,已经成为全球人工心脏辅助装置研究的重点和热点。
Disc permanent magnet synchronous motor is a new type of high performance servo motor developing in recent years. It has the characteristics of short axial size, light weight, small volume, close structure and so on. 盘式永磁同步电动机是近年来发展起来的新型结构高性能伺服电动机,具有轴向尺寸短、重量轻、体积小、结构紧凑等特点。