a-axis orientation 中文意思是什麼

a-axis orientation 解釋
a軸取向
  • a : an 用在以母音音素開始的詞前〉 indefinite art 1 〈普通可數名詞第一次提到時，冠以不定冠詞主要表示類...
  • axis : n （ pl axes ）1 軸，軸線。2 【植物；植物學】莖軸。3 【解剖學】第二頸椎，第二脊骨。4 【政治學】軸...
  • orientation : n 1 向東，（禮拜時）東向；置於東端。2 （房屋等）方向；找出東方；定位，定向；取向，排列方向。3 （...
  1. After that, according to thermal conduction theories of anisotropic materials that were irradiated with continuously modulated laser, a photothermal measuring method about the thermal conductivity tensor and the orientation of the principal axis of the conductivity of arbitrarily opaquely anisotropic materials in the descartes coordinate axes was given by virtue of the theories of so ( 3 ) group rotation

    隨后又以在連續調制光輻照下的各向異性介質的熱傳導理論為基礎，通過so （ 3 ）群轉動理論，導出確定任意不透明各向異性介質在笛卡兒坐標下的熱導張量和熱導主軸方向的測量方法。
  2. It is found that all the thin films have a preferential c - axis orientation. with increase of al doping, the peak position of the ( 002 ) plane is shifted to the low 2 value

    同時， zno通過摻雜，對其帶隙進行調整，使探測器的吸收截止邊按需求被控制在特定的波長范圍內，將成為zno基紫外探測器研究中新的熱點。
  3. Firstly, when the pipe flow was laminar, the movement of fibers was computed in the 2 - d force formulae that were deduced from the slender body theory and in 3 - d integral method. results revealed that angles between fibers " axis and the orientation of flow would concentrate gradually on a low number as the re numbers increased. that is, the axis of fibers would rotate toward the orientation of flow

    首先，當管道內流動為層流時，分別利用從細長體理論出發得出的纖維二維受力公式和三維分段積分計算方法模擬了大量纖維在流場中的運動，然後在最終時刻統計了纖維的偏角分佈，並得出相同的結果：隨著re數的增加，纖維粒子的偏角逐漸集中於小角度，即纖維軸線方向越來越集中於流向，此結果與實驗吻合較好。
  4. Prepared technical parameters were optimized by l9 ( 34 ) experiment analysis. a unique method for cleaning and drying of substrate - cleaning used by scour, drying used by infrared light was fished out by large numbers of experiment. chemical mechnism of zno thin film prepared by sol - gel technique was discussed by dta for the first time. by the measurements of sem, xrd and uvs, the thin film was analysed. the result proved that the thin film with strongly preferred orientation of c - axis perpendicular to the substrate surface which surface was homogenous, dense and crackfree was the crystalline phase of hexagonal wurtzite. the thin film was composed of plentiful asteroidal crystal which crystal dimension approximately 10 30nm. the average transmittance of thin film in visible region was above 90 %. the results of measurements else also proved that the thickness of single dip - coating was 75 240nm, this films resistivity was found to be 3. 105 102 3. 96 105 ? cm. the thickness and resistivity of thin film influenced by dope - content, withdrawal speed, pre - heat - treatment, anealing were reseached respectively

    利用xrd 、 sem以及uvs光譜儀等分析方法對薄膜進行了研究，結果顯示，所制備的薄膜為六方纖鋅礦型結構，具有高c軸擇優取向性；表面均勻、緻密，薄膜材料由許多星狀晶粒組成，晶粒尺寸大約為10 - 30nm左右；薄膜可見光透過率平均可達90 % ；對薄膜厚度以及電學性能進行了測定后發現：單次鍍膜厚度約為75 - 240nm ， al ~ （ 3 + ）離子摻雜型氧化鋅薄膜的電阻率在3 . 015 102 - 3 . 96 103 ? cm范圍內；分別研究了摻雜濃度、提拉速度、預燒溫度、退火溫度等工藝參數對薄膜厚度和電阻率的影響。
  5. The transmittance of zno thin films with suitable doping molar ratio is above 80 % in the uv - visible range. the films obtained in this work show to have a high c - axis orientation, smooth and smooth morphology, high electrical resisitivity and high transparency, which can meet the requirements for piezo - electrical devices

    本論文通過對li ： zno以及（ mg人中znot4膜的分析研究，深入地探討了旋塗方式、熱處理溫度、摻雜濃度和熱處理方式等對zno膜結晶取向的影響以及電學和光學性能的影響關系等，對z ； 。
  6. Then, the minimum circumscribed circle and shape principal orientation of the object region are calculated ; and the object region is divided into some blocks in the polar coordinate, which uses the center of the minimum circumscribed circle as the origin and the direction of the shape principal orientation as the direction of the polar axis, and the features of all subblocks are extracted to compose shape histograms and then smoothed ; then, combined with global features to synthetically represent the content of the image ; finally, a new image similarity is used to compute the distance between images

    首先對商標圖像進行預處理，得到規則二值圖像;計算目標像素的最小外接圓和圖像的形狀主方向;在以最小外接圓圓心為原點、形狀主方向為極軸方向的極坐標中將圖像分塊，提取各子塊特徵，構成形狀直方圖並平滑處理;再結合全局形狀特徵來綜合表示圖像內容;最後採用新的相似性度量方法計算圖像間距離，實現商標圖像的準確檢索。
  7. To solve the overflow or underflow of the components of appearance attributes caused by watermarking, we clip the error ones to the correct ranges by adjusting the corresponding basis function elements. the normalization operation would destroy the watermark embedded in the normal vector. the author presents a novel approach by rotating the normal vector around a fixed axis, which will modify its orientation, not magnitude

    其中，針對在外觀屬性分量上植入水印的值溢出問題，作者提出了動態修改基函數的方法；考慮到直接修改法向量分量的方法會受到法向量單位化操作影響導致水印提取困難，作者提出一種繞固定軸旋轉法向量的方法，有效地避免了單位化對已植入水印信息的影響。
  8. Zinc oxide ( zno ) is a wide band gap ( 3. 4ev ) semiconductor with the hexagonal crystal structure ( wurtzite type ). zno thin films with the c - axis orientation perpendicular to the substrate show excellent piezo - electrical properties and are widely used in piezo - electrical filed. and the dense anjd uniform surface of the films is required when zno thin films are used as integrated functional films

    Zno屬於六方晶系6mm點群，晶體在c軸垂直面上的電性和彈性都是對稱的，因而c軸擇優取向的多晶薄膜能夠具有單晶那樣的壓電性和光電性質，而具有平整均勻的表面形貌則是zno薄膜作為一種集成功能薄膜應用性能的保證。
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