FLATNESS

作品数：92被引量：157H指数：8
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相关领域：生物学更多>>
相关作者：康仁科冯光霍凤伟郭东明赵洪斌更多>>
相关机构：大连理工大学北京海思威科技有限公司北京医疗器械研究所北京大学更多>>
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相关基金：国家自然科学基金国家重点基础研究发展计划河北省自然科学基金国家教育部博士点基金更多>>
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Flatness maintenance and roughness reduction of silicon mirror in chemical mechanical polishing process被引量：2
《Science China(Technological Sciences)》2020年第1期166-172,共7页JIANG BoCheng ZHAO DeWen WANG BingQuan ZHAO HuiJia LIU YuHong LU XinChun 
supported by the National Basic Research Program of China(Grant No.2015CB057203);the National Natural Science Foundation of China(Grant No.91323302)
As an important optical component in laser system,silicon mirror surface is required to have micron-level flatness and subnanometer-level roughness.The research concentrates on how to improve roughness as far as possi...
关键词：chemical mechanical polishing silicon mirror flatness maintenance roughness reduction 
Tuning for the first 9-cell TESLA cavity of PKU被引量：1
《Chinese Physics C》2010年第4期496-498,共3页杨柳 贺斐思 徐文灿 朱凤 鲁向阳 赵夔 
Supported by National Basic Research Programme of China (2002CB713600)
A method based on circuit model is used to tune the first home-made 9-cell TESLA type superconducting niobium cavity at Peking University. After tuning, a flat field profile with a final π-mode frequency within 3 kHz...
关键词：9-cell cavity circuit model field flatness tuning 
MONTE CARLO SIMULATION OF RADIATION FIELD OPTIMIZATION FOR MEDICAL LINAC被引量：2
《Transactions of Nanjing University of Aeronautics and Astronautics》2010年第1期7-12,共6页赵洪斌 张新 包尚联 黄斐增 李泉凤 
Supported by the National Natural Science Foundation of China (60672104,10675013);the Na-tional Basic Research Program of China ("973"Program)(2006CB705705);the 10th Five-Year Plan of the Ministry of Science and Technology of China(2001BA706B-05);the Joint Research Foundation of Beijing Municipal Commissionof Education~~
A method for designing an X-ray flatness filter for medical electron linac is developed. It is used in the optimization process in the electron beam radiation system. Monte Carlo simulation method is used and two exam...
关键词：linear accelerators computer simulation and Monte Carlo methods radiation system optimization flatness filter design 
Region Division and Stress Analysis for Plate Roller Leveling Process
《Journal of Iron and Steel Research International》2005年第6期27-29,共3页ZHOU Cun-long WANG Guo-dong LIU Xiang-hua QIN Jian-ping 
ItemSponsoredbyNationalKeyFundamentalResearchandDevelopmentProjectofChina(G20000672084)
The flatness of leveled plate is settled by residual stress. According to stress distribution simulated by FEM software ANSYS/LS-DYNA, the plate can be divided into non-steady region and steady region. The nonsteady r...
关键词：LEVELING residual stress non-steady region steady region FLATNESS 
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