directional beam 中文意思是什麼

directional beam 解釋
定向波束
  • directional : adj. 1. 方向的。2. 【無線電】指向的，定向的。
  • beam : n 1 梁，棟梁，桁條；（船的）橫梁。2 船幅；（動物、人的）體幅。3 （秤）桿，杠桿，（織機的）卷軸，...
  1. Therefore, in this paper, two directional solidification methods, czochralski method and electron - beam floating zone melting method, were used to obtain such material. the directional solidifition microstructures of si - tasi2 system was performed using neophot - 1, amray - 100b sem and jem - 2000cx tem analysis technique

    本文採用切克拉斯基法（ cz法）和電子束區熔法（ ebfzm ）兩種定向凝固方法制備該共晶自生復合材料；藉助金相技術、電鏡技術、圖象處理技術等多種分析測試手段，考察了si - tasi _ 2共晶定向凝固組織和及其相應的工藝規范。
  2. Digital signal processing technologies were used to produce spatial and directional beam in adaptive antenna. then the main beam aims at the coming direction of desired signal and the side lobe points to the coming direction of interference signals

    自適應天線利用數字信號處理技術，產生空間定向波束，使天線主波束對準期望信號到達方向，旁瓣或零陷對準干擾信號到達方向。
  3. Digital signal processing technologies were used to produce spatial and directional beam in smart antennas. then the main beam aims at the coming direction of reference user and the side lobe points to the coming direction of interference user

    智能天線是利用數字信號處理技術，產生空間定向波束，使天線主波束對準期望用戶信號到達方向，旁瓣或零陷對準干擾信號到達方向，達到充分高效利用移動用戶信號並刪除或抑制干擾信號的目的。
  4. Digital signal processing technologies were used to produce spatial and directional beam in smart antennas. then the main beam aims at the coming direction of reference user and the side lobe points to the coming direction of interference user. smart antennas are classified to switching - beam and tracking - beam

    智能天線利用數字信號處理技術，產生空間定向波束，使天線主波束對準期望用戶信號到達方向，旁瓣或零陷對準干擾信號到達方向，達到充分高效利用移動用戶信號並刪除或抑制干擾信號的目的。
  5. Static deformation of a beam with directional attached piezoelectric elements

    用固支梁撓度曲線模擬高速路基本超車過程
  6. So adjusting the drift of laser beam and improving its directional stability, which is the key technology in the domain of the linear reference technology, demands to be solved

    可見，抑制激光光束漂移，改善其方向穩定性是直線基準技術領域急需解決的關鍵技術。
  7. The laser beam treated as a linear reference is used widely in the manufacture and measurement equipments, due to its many advantages, such as high brightness, good directivity, and good coherence etc. but the further improvement of the laser directional stability accuracy is restricted by some factors, such as the environment etc, which restrain the application greatly in the ultra - precision manufacture and measurement equipments

    激光光束由於其亮度高、方向性好、相干性好等優點，常被作為直線基準廣泛應用於加工和測量設備中。但由於受環境狀態等因素的影響，制約了激光方向穩定精度的進一步提高，限制了激光在超精密加工和測量設備中的進一步應用。
  8. The out - of - plane stability of bending beam, which is made up with 2 beams and loaded by non - directional force, is studied. the bending and torsional deflection differential equation of each beam is established in critical condition. according to compatibility conditions of deformation, the characteristic equation is obtained to calculate out - of - plane stability of the cantilever bending beam

    對兩節梁組成的彎曲梁在非保向力作用下的平面外失穩問題進行了研究，通過建立每節梁臨界狀態下彎曲和扭轉變形微分方程，根據桿件變形的邊界條件以及桿件之間的變形協調關系，得出了一端固定一端懸臂的彎曲梁在非保向力作用下平面外失穩的特徵方程。
  9. The simulation using the bi - directional beam propagation method proves that the demultiplexer can have very low insertion loss and high isolation ratio

    藉由雙向光束傳播法來模擬此組件，結果顯示此解多任務器具有很低的插入損耗和高的隔離度。
  10. In this paper, an ingot of niobium - niobium silicide based in - situ composites ( rmics ) was prepared by arc melting process, and nb - nb3si / nb5si3 in - situ composites with a uniformly orientated microstructure were produced in a high temperature gradient directional solidification apparatus named electron beam floating zone melting ( ebfzm ). the relationships between the processing parameters and the characteristics of the solidified microstructure have been investigated. the influence of the microstructure on the mechanical properties has been revealed and the rupture mechanism at room temperature has been discussed

    本文採用真空電弧自耗熔煉法制備了鈮?硅基rmics材料的母合金錠，並採用電子束區熔（ ebfzm ）高溫度梯度定向凝固裝置制備了定向效果良好的nb - nb _ 3si nb _ 5si _ 3共晶自生復合材料，並對其定向凝固工藝參數和組織之間的對應規律、組織特性進行了研究，探討了凝固組織對室溫力學性能的影響及其斷裂機制。
  11. Based the research on the laser beam drift feedback control technique, analysing the beam drift and its frequency components, a laser beam directional stability method is studied in the thesis in detail, with its measurement and control circuit system that combines the laser beam intensity modulation and the beam drift feedback control technique. in this method, at first the laser beam intensity is modulated with the acoustooptic modulator, then the lock - in amplifier is applied to detect and demodulate the modulating signal, at last a feedback control signal is generated by the dsp control circuit at last, including : 1

    本文在原有的激光光束漂移量反饋控制準直技術的基礎上，對光束漂移量信號的數據和頻譜進行了分析，重點研究了一種集聲光調制光強與光束漂移量反饋控制準直技術於一體的激光光束方向穩定方法及其測控電路系統，該方法通過聲光調制實現光強調制，接著通過鎖相放大電路檢測並解調調制信號，然後通過dsp控制電路進一步對光束的漂移量進行反饋控制。
  12. The three - dimension dbf of circular array and cylinder array are presented. we adopt equivalent with uniformity linear array ( ula ) in cylinder beam forming, and compare pattern of directional elements with of omni - directional elements

    在圓柱陣的波束形成模擬中，採用了等效均勻線陣的方法，簡化了數字波束形成的計算量，並且還對有向陣元和全向陣元在陣列波束形成中的影響進行了模擬比較。
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