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A key limitation in the observation of instruments used in operations and heart sutures during a procedure is the scatte......
提出了一个新型水基宽带超材料吸波结构,利用水在微波波段优异的电磁特性,使该结构对于入射电磁波的吸收率在8.2~78.32 GHz频段内......
A key limitation in the observation of instruments used in operations and heart sutures during a procedure is the scatte......
Y分支波导是集成光子器件中的重要单元器件，设计和制作大角度、低损耗的新型Y分支光波导结构是集成光学中研究热点之一。采用折射率......
In general, the propagating behavior of extraordinary wave in anisotropic materials is different from that in isotropic ......
目的探讨非接触广角观察系统下玻璃体视网膜手术治疗严重眼外伤的临床效果。方法回顾性分析2013年6月至2014年9月接受非接触广角观......
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A flexible broadband linear polarization converter is proposed based on the metasurface operating at microwave band. To ......
常规玻璃体视网膜手术是在一组角膜接触镜下完成,术中术者及助手不但需要根据手术部位及手术目的不断地旋转接触镜,而且暴露的视野......
The vP Velocity Structures of Sub-blocks in the North China Craton from Active Source Waveform Model
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......
Joint exploration of crustal structure in Fuzhou basin and its vicinities by deep seismic reflection
The Fuzhou basin and its vicinities are located at the northern end of the southeastern coastal seismic zone of the main......
以左云长春兴煤业公司301综放工作面扇形收尾施工工艺为背景,介绍了在工作面受地质构造或者井田边界影响,工作面两顺槽与盘区大巷......
简要介绍K9玻璃棱镜中用金属介质膜系实现宽波长宽角度消偏振的设计，设计波长为420-680nm，空气中的入射角变化范围为±8°,......
用宽角X射线衍射峰形分析法对五种聚丙烯腈(PAN)纤维试样的取向度(π)、结晶度(C)和晶粒尺寸(L)进行了测定,以此对PAN纤维进行了结......
The Mesozoic-Paleozoic marine residual basin in the South Yellow Sea(SYS) is a significant deep potential hydrocarbon re......
数字航空摄影测量系统已经成为航空遥感资料的主要获取手段,在地质调查中发挥了巨大作用。但由于其幅面较传统胶片小,造成航摄成果......
针对综采工作面两端部沿顶板开采，中部从顶板过渡到沿底板开采，形成一个最大走向俯角21°、倾向倾角36°的综采工作面，在开采......
对抛物方程中的伪差分算子进行Feit-Fleck宽角近似处理,分析了这种近似所带来的误差;详细阐述了阻抗边界条件下求解这种宽角抛物方......
在求解宽角度精度问题上,引入贝叶斯压缩感知算法,构建了一种新的角度信息的入射源,计算结果表明有较高的精度.......
复摆在做大角度摆动时,其运动已不再是简谐振动,其运动微分方程不存在解析解。为全面了解复摆的运动规律,本文借助MATLAB软件,模拟......
Calculation of the wide-angle neutron spectra from the 9Be(d,xn) reaction in a thick beryllium targe
The multi-layer computing model is developed to calculate wide-angle neutron spectra, in the range from0° to 180......
Zeoppritz方程的近似形式大多是符合小角度或中等角度入射条件的,大角度入射时的近似公式很少.因此,从精确的纵波反射系数计算公式......
The vP Velocity Structures of Sub-blocks in the North China Craton from Active Source Waveform Model
We present the 1-D crustal velocity structure of the major tectonic blocks of the North China Craton(NCC)along 36°N......
With the affecting story and special narrative technique,The King’s Speech has won the favor of audience at home and ab......
Firstly,the relationship between the accuracy of low altitude aerial photogrammetry and the field angle of camera is mad......
