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uniformity and Regional Variation: The Xiangli System in the Sui Dynasty
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《Social Sciences in China》2019年 第2期40卷 77-95页
作者:Lu Xiqi Liu HaoSchool of History Wuhan University National Innovation Center for Assessment of Basic Educational Quality Beijing Normal University 
As defined in a decree issued in the spring of 583,the three heads or sanzhang system,designed to be implemented chiefly in the old Northern Qi area in Shandong,basically followed the Northern Qi version of 564,with s...
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Illumination system with compound parabolic retro-reflector for single LCOS panel projection display
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《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2007年 第12期8卷 2021-2026页
作者:ZHEN Yan-kun YE Zi ZHANG Wen-zi ZHAO Ting-yu YU Fei-hongState Key Lab. of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China 
In this paper, a new illumination system with ultra high performance (UHP) lamp is proposed for projection display. Parabolic reflector (PR) and compound parabolic retro-reflector (CPR) were jointly used to collect an...
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Design of an interventional magnetic resonance imaging coil for cerebral surgery
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《Chinese Physics B》2012年 第11期21卷 554-559页
作者:许跃 王文韬 王为民Institute of Quantum ElectronicsSchool of Electronic Engineering and Computer SciencePeking University 
In clinical magnetic resonance imaging (MRI), the design of the radiofrequency (RF) coil is very important. For certain applications, the appropriate coil can produce an improved image quality. However, it is diff...
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