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- electrically large aperture 电大尺寸口径面
- Usually, a large aperture lens will give better results. 若使用大光圈的镜头,效果当然更理想。
- What lense do you use? Ultra large aperture requires? and flash? 用尽旧镜微距能力，专人指导使用微距滤镜，拍尽微距世界！
- For improving SAR's ECCM capability adoption of phased array antenna with large aperture is one of effective measures. 为了改进合成孔径雷达的ECCM能力，采用大孔径相控阵天线具有重要意义，是有效的措施之一。
- The principle of the system of interferometer in large aperture image spectrometer has been expatiated. 提出了大孔径干涉型成像光谱仪的原理,并展示了攻关样机和实验数据。
- The system has large aperture and low F number due to the requirement of large FOV. 空间推扫相机的光学系统要求具有大视场、大口径、低F数等特点,据此设计了一种3波段光学系统。
- Electromagnetic (EM) scattering by electrically large open-ended cavities is analyzed by DDM/FEM-BIE. 采用这种混合方法对电大尺寸三维开口腔体的电磁散射特性进行了分析，从而为应用低频方法分析电大尺寸目标提供了一条新的途径。
- The merits of this interferometer are adjustable sensitivity, antivibration and very large aperture. 这种干涉仪的优点在于灵敏度可调,抗振性强,易做成大口径。
- Design of Catadioptric Large Aperture Three Group Elements Infrared Zoom System[J]. 引用该论文 王鹏;赵文才;胡明勇;翁志成.
- A precise measurement system of high reflectivity for scanning large aperture components in high power laser system is developed. 为了测量高功率激光传输系统中大口径高反射率元件,研制了一种镜面扫描的精密测量系统。
- A combination of finite element method (FEM) and fast multipole algorithm (FMA) is proposed to analyze the scattering problem of electrically large coated cylinders. 采用有限元-快速多极混合算法分析了介质涂层电大尺寸导体柱的电磁散射特性。
- To meet the requirement of the specification of the large aperture component in ICF system, the sub-aperture stitching interferometer is introduced. 为了满足我国ICF系统大口径光学元件的检测需要,提出了子孔径拼接干涉检测的方法。
- The theory of Incremental length diffraction coefficients (ILDC) is one of the efficient methods to calculate the edge diffraction of electrically large scaled complex objects. 增量长度绕射系数理论(ILDC)是对电大尺寸复杂目标进行边缘绕射计算的有效方法之一。
- A new method to calibrate a large aperture infrared opto-electric system by using a small aperture illumination collimator is introduced in detail. 摘要介绍了一种用小口径照明光管定标大口径红外光电系统的新方法。
- Abstract： A combination of finite element method (FEM) and fast multipole algorithm (FMA) is proposed to analyze the scattering problem of electrically large coated cylinders. 摘 要： 采用有限元-快速多极混合算法分析了介质涂层电大尺寸导体柱的电磁散射特性。
- It is a difficult task to measure the reflectance, transmittance and optical uniformity of an optical coating with very large aperture. 在大口径光学元件高质量薄膜的制造过程中，对于透射率和反射率的均匀性测试是非常困难的。
- The fast multipole method (FMM) and the multilevel fast multipole algorithm(MLFMA) are new efficient methods for analysis problems of electrically large objects. 快速多极子方法(FMM)和多层快速多极算法(MLFMA)是研究电大尺寸目标问题的新型的快速高效数值算法。
- A special test gauge for large aperture inner diameter and roundness is designed in this paper,and the gauge error is analyzed by calculating and determining its parameters. 介绍一种大孔径内径和圆度专用检验量具的设计,并通过计算确定该量具的设计参数并对该量具进行误差分析。
- By using large aperture infrared imaging lens and amplifying, A/D converting, NUC, the system produces digital image signal which in direct ratio with radiation of target. 该系统采用大口径红外成像镜头，图像信号经放大、A/D转换和图像非均匀性校正，输出与目标辐射量成正比关系的数字图像信号。
- The existing systemsmostly use the aspherical mirror as the primary which is hard to make large aperture due tothe difficulty of fabricate and assemble. 但是，现有的光学系统多采用复杂非球面镜做主镜，其制造难度大、成本高、装调困难，不容易做大口径。
