簡並傳導帶 的英文怎麼說
中文拼音 [jiǎnbàngzhuàndǎodài]
簡並傳導帶
英文
degenerate conduction band- 簡 : Ⅰ形容詞（簡單） simple; simplified; brief Ⅱ動詞1 （使簡單; 簡化） simplify 2 [書面語] （選擇人才...
- 並 : 併名詞1. （山西太原的別稱） another name for taiyuan （in shanxi province）2. （姓氏） a surname
- 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
- 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
- 簡並 : [物理學] degeneracy; degeneration; degenerate
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According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d
本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。To start with, the thesis mainly discusses the reading comprehension, from the definition of reading and reading comprehension to three different reading models, which shows that the most efficient reading model is interactive reading model, in which schemata knowledge is not only necessary but also important ; after the documentation, the thesis lays its foundation on schemata theory, which involves the different definitions of " schema ", the classification of schemata knowledge and its function in reading comprehension, from which the conclusion is drawn that during the reading, students can use different types of schemata knowledge according to the their language proficiency and different reading materials ; in the following part, the thesis briefly states the relationship between the reading comprehension teaching and the schemata theory, from which i gain inspiration and find out the applications of schemata theory in english reading comprehension teaching in senior high schools ; and at the same time, i offer a reading teaching model of a text, which shows how to use schemata theory in reading comprehension teaching ; in the last part of the thesis, an experiment is done between two classes using two different teaching methods, one is traditional, the other is new, that is, the teaching method that uses schemata theory, which is proved to be far better
論文首先探討了閱讀理解，從閱讀及閱讀理解的定義到三種不同閱讀模式等方面的探討，得出有效的閱讀模式是「相互作用模式」 ，該模式的運行離不開圖式知識的運用；然後，本文介紹了圖式理論，從圖式的不同界定到圖式的分類以及不同圖式知識在閱讀理解中的不同作用，得出：在閱讀中，讀者根據自己的語言水平和文章的難易程度的不同，調用不同的圖式。在介紹完了圖式理論之後，本文還簡述了圖式理論與閱讀教學的關系，探討了圖式理論對高中英語閱讀教學的幾點啟示及其啟示下的具體運用方法，並提供了一篇課文的閱讀教學模式，具體展示了在圖式理論的指導下，如何上一堂閱讀課；在文章的最後部分，筆者在自己所帶的班級中利用將近一年的時間作了一個實驗：在兩個班分別使用不同的教學模式，一個是傳統的教學模式，另一個是圖式理論指導下的新的教學模式。實驗結果證明，新教法的教學效果要好的多。
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