超平面束 的英文怎麼說

中文拼音 [chāopíngmiànshù]
超平面束 英文
pencil of hyperplanes
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 平 : Ⅰ形容詞1 （沒有高低凹凸 不頃斜） flat; level; even; smooth 2 （高度相同; 不相上下） on the same l...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 束 : Ⅰ動詞1 （捆; 系） bind; tie 2 （控制; 約束）control; restrain Ⅱ量詞（用於捆在一起的東西） bundle;...
  1. Abstract : new ideas, new structures and new technologies have been used for the design, manufacture and installment of wiggler in order to achieve the coincidence of the central level planes of magnets and beam vacuum tube

    文摘:採用新思想、新結構、新工藝設計和加工超導扭擺磁鐵，並在安裝過程中確保磁體的準直，實現了磁體的磁中心水平面與束流真空管的中心水平面的重合。
  2. It is shown that the fgb and sgb passing through a paraxial abcd system demonstrate similar irradiance profile at the positions of the equal generalized fresnel number. but the fgb and sgb passing through a paraxial abcd optical system having spherically aberrated lens do not demonstrate similar irradiance profile at the positions of the equal generalized fresnel number. the nearly same irradiance profile at the positions of the equal generalized fresnel number can be achieved if the fgb and sgb have the same a / 2 - factor and waist width

    在此基礎上首次對相同m ~ 2因子、四川大學博士學位論文不同束腰寬度的平頂高斯光束和超高斯光束作了比較，發現具有棋同礦因子、不同束腰寬度的平頂高斯光束和超高斯光束在近軸abcd光學系統中傳輸時，在菲涅爾數相同的兩個面上具有相側的光強分佈
  3. The main work of this paper was as fellows : ( 1 ) generalized the development of pre - stressed steel structure in our nation and abroad, and pointed out the main problem in practice ; ( 2 ) presented the mechanism of pre - stressed steel structure and revealed its applicable range ; ( 3 ) established the optimization design model for pre - stressed steel structure, which accounts for constraints on stresses and displacements of structure ; ( 4 ) brought forward the optimization design method, which combined linear programming and the principle of full restriction, through which we can obtain the magnitude of each time pre - stress and the optimized sections of each members of structure ; ( 5 ) analyzed the best times of pre - stress and pointed out that 2 ~ 3 times is preferable ; ( 6 ) conducted optimization design on large - space steel roof, horizontal parallel steel truss with local cables, horizontal parallel steel truss with global cable, and ultra - static steel truss, the result of which indicated that the multiple pre - stress structure is very economic ; ( 7 ) compared different schemes of cable placement for horizontal parallel steel truss, and the results showed that the local cable only unloaded the second girders, but had no response on the first girders and stomach poles, while global cable could unload the second girders and the stomach poles outside of turning point of cable, thus proving that global cable is more economic than local - cable

    本文的主要工作是：對國內外預應力鋼結構的發展歷史及現狀作了綜述和總結，指出當前預應力鋼結構工程實踐中存在的主要問題；闡述了預應力鋼結構的受力機理，並指出預應力鋼結構的適用范圍和特點；在考慮結構應力和變位約束的條件下，建立預應力鋼結構優化設計模型；提出多次預應力鋼結構優化設計方法和步驟，採用線性規劃和滿約束準則相結合的優化方法，可優化設計出施加的每一級預應力的大小，並得到結構各部分的優化截面；對多次預應力最佳的施加次數作了分析，並建議以2 3次為宜；為驗證文中理論和方法，分別對大跨多次預應力鋼屋架、局部布索的水平平行弦鋼桁架、整體布索的水平平行弦鋼桁架和局部布索的超靜定鋼桁架等算例進行了優化設計，經濟效益明顯；對水平平行弦鋼桁架的幾種施加預應力的方案進行比較，對于局部布索，預應力只對下弦起到卸載作用，對上弦和腹桿基本不起作用；而整體布索預應力除對下弦卸載外，對索折點以外部分腹桿也起到卸載作用，經濟效益好於局部布索。
  4. Emphasized on the influence of planar reflector on focusing beams, the model of immersion focusing ultrasonic field based on focusing beams reflected by planar reflector is given. and it has been studied on immersion testing the cylindrical objects with the single focus transducer, which is available for small - diameter pipelines

    分析了平面反射鏡對聚焦聲束的影響，首次建立了超聲聲束經平面反射鏡反射后的聚焦超聲場模型；分析表明，單焦距探頭經平面反射鏡反射后可用於小管道的智能檢測。
  5. The results indicate that the peak intensity of transmission beam is limited, and the cross - section intensity distribution is approximately flat - topped super gaussian, which shows the optical limiting effect of sbs

    結果表明，透射光束截面光強呈現出近似平頂的超高斯分佈，光強峰值被限制，顯示出受激布里淵散射的空間光限幅效應。
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