電子束界限 的英文怎麼說

中文拼音 [diànzishùjièxiàn]
電子束界限 英文
beam boundary
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
  • : 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;...
  • : 名詞1 (相交的地方; 劃分的界限) boundary 2 (一定的范圍) scope; extent 3 (按職業、工作或性別等...
  • : Ⅰ名詞(指定的范圍; 限度) limit; bounds Ⅱ動詞(指定范圍, 不許超過) set a limit; limit; restrict
  • 電子 : [物理學] [電學] electron
  • 界限 : 1 (分界) demarcation line; dividing line; limits; bounds; boundary; range; limitation 2 (限度...
  1. The performance of the pbg antenna using the new pbg cover together with a pbg substrate is studied by the fdtd method together with the pml boundary treatment. the numerical results show that a more focused beam radiated in the broadside direction is achieved. the gain of the pbg patch antenna in the forward direction is improved by about 6 db. the radiation directivity is improved significantly and reaches 11. 5 db, which is 0. 4 db less than the maximum value that is allowed physically for this size of the antenna ( this difference is about 4. 1 db less than the difference achieved by thevenot et al.,

    用fdtd方法並結合pml吸收邊條件,我們對加了這種新的覆層結構並且基底鉆孔的復合結構磁(光)晶體貼片天線的性能進行了研究,結果證明加了這種新的磁晶體覆層結構以後,天線的波收攏很多,並且向前輻射的增益大大提高,與普通天線相比,天線的e面和h面方向圖上向前輻射的增益均提高了約6db ,另外,該復合結構天線的方向性系數達到了11 . 5浙江大學博士學位論文db ,與該物理尺寸天線的方向性系數的理論極值( 11 . 9db )相差0 . 4db ,該差值比thevenot等人設計的磁晶體覆層天線的相應差值減少了約4 . 1db ,比qiu等人設計的磁晶體天線的相應差值減少了約1
  2. In 1985, takeshi kodama et al. [ 12 ] expressed the wavefunction as the combination of the function of the single electron in a one - dimensional square well with the finite barrier to calculate the binding energies of the exciton. this form does n ' t satisfy the continuity of the function and of its derivative divided by the band - mass

    1985年, takeshikodama等人在計算激縛能時把單的波函數( x , y )取為一維有深方形量阱中波函數的乘積,這種取法在邊上不滿足波函數的連續性條件及粒流( 1 / m ~ * ) ' ( x , y )的守恆條件。
  3. Secondly, it begins to explore the vital effect of the early - warning system in survival development for it industry in fujian, besides the characteristics, precondition, building process, structure and function. thirdly, it establishes an index system, which includes a constraint layer of three constraint factors, such as industrial science and technology, industrial economics and industrial circumstance, and 19 indexes. in order to ascertain the dividing lines of alarming situation, it introduces the concept of subordinate degree

    論文首先提出福建省信息產業可持續發展理論,在此基礎上,探索預警系統在可持續發展中的重要作用,分析信息產業可持續發展預警系統的特徵、建立的前提條件、構建過程及其結構和功能;然後構建一套由產業科技、產業經濟和產業環境三個約構成的約層,及由19個指標構成的福建省信息產業可持續發展預警系統指標體系,並引入模糊數學的隸屬度概念,將預警的確定轉化為相應隸屬度的確定,預警結果的輸出採用紅、黃、綠三色信號燈顯示系統法;最後用1995 - 2001年福建信息產業的相關統計數據對所建立的福建省信息產業可持續發展預警系統進行實例驗證。
  4. There were troubles in the continuity of the function and of its - derivative divided by band - mass on the boundary. in the theoretical calculation, the wave function is relative to the physical properties of the impurity greatly, the envelop function f ( x, y ) is expanded in terms of the one - dimensional linear harmonic oscillator function in this paper. it satisfies the continuity of the function and of its - derivative divided by the band - mass, so it improves the precision of the function and binding energy

    與以往工作不同的是,以前選用的x , y方向的包絡函數f ( x , y )是一維有深量阱中波函數的乘積,在邊上波函數的連續性和粒流的守恆條件存在問題;而在理論計算中,波函數的選取與雜質的物理性質有密切關系,本文選取的的包絡函數是用一維線性諧振的波函數展開而成的,在邊上能夠同時滿足波函數的連續性及粒流( 1 / m ~ * ) f ' ( x , y )的守恆條件,從而使得波函數和縛能的精確度得到了改進。
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