拋物面法的英文怎麼說

中文拼音 [pāomiàn]
拋物面法英文
paraboloid method

  • : 動詞1. (扔; 投擲) throw; toss; fling 2. (丟下; 拋棄) leave behind; cast aside; abandon
  • : 名詞1 (東西) thing; matter; object 2 (指自己以外的人或與己相對的環境) other people; the outsi...
  • : 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...
  • : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...

※中文詞彙拋物面法在字典百科國語字典中的解釋。

  1. A parabolic concave mirror can converge parallel light rays to its focus, and also collimate light rays that pass through its focus

    凹鏡會把平行而來的光線聚集在一點焦點,亦會把源自焦點的光線平行向外反射。
  2. Paraboloid hyperholoid mirror

    雙曲
  3. While carrying out the scheme, at first, the basic theory of antenna, array antenna and electromagnetic absorption, the performance parameter of antenna and parabolic antenna are deeply researched. in conformity, the characteristic and calculation of aperture field and near - to - far - field transformation for radiation pattern are detailed analyzed. second, the factors such as, the amount of the antenna elements, mutual coupling between each element, ground and the buildings on earth ' s surface, which affect the performance of array antennas ’ resultant field are stressed discussed

    在系統實現過程中,課題首先從天線、陣列天線,以及電磁場計算方的基本理論著手,分析了天線與天線的各項性能參數,以及天線的口場和近-遠區輻射場的特點和計算;進而,更加深入的討論和研究影響天線陣列合成場強的各項因素,包括系統所使用的天線單元個數對陣列合成場的影響、天線單元之間由於互耦造成的影響、傳播過程中地和/或地建築的影響等。
  4. The combination of fdtd method with physical optics is also used to analyze paraboloidal reflector antenna in millimeter band. using fdtd method, we obtains precise near fields of the feed because the computing areas include all the feed structure. the current on the paraboloidal reflector can be calculated by using physical optics, and then the far field of reflector can be calculated

    在毫米波天線的分析計算中,把fdtd與理光學結合起來, fdtd用於具有精細結構的饋源及饋電波導一體計算,得到饋源的幅度和相位方向圖,以此為依據調整饋源結構,使饋源的幅度和相位方向圖為最佳狀態。
  5. Then, we establish the finite element analysis models of the antenna in different structure layout, and obtain the corresponding frequencies and model shapes. finally, according to the importance of each object, we set up the model of multiple objects that aims to maximize the first natural frequency and minimize the mass. combining orthogonal experiment and variant weighting coefficient method, we formed an effective multiple objects optimized algorithm basing on the neural network and genetic algorithm

    本文首先詳細的敘述了天線結構的各組成單元,闡明了天線反射的形成原理;然後在ansys軟體環境中建立了不同結構布局下天線的有限元分析模型,分析計算了各種情況下天線的的固有頻率與振型;最後依據天線各指標的重要性,建立了以一階固有頻率最大、質量最小為目標的天線結構多目標優化設計模型,並基於神經網路和遺傳演算,結合正交實驗和變加權系數技術,形成了一種有效的多目標優化演算,在matlab平臺下實現了天線的結構多目標優化設計計算程序,求得了天線的最佳結構參數。
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