拋物面反射體 的英文怎麼說

中文拼音 [pāomiànfǎnshè]
拋物面反射體 英文
dish
  • : 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 (方向相背) reverse side 2 (造反) rebellion 3 (指反革命、反動派) counterrevolutionari...
  • : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
  • : 體構詞成分。
  1. The design of amorphous photonic material and photonic crystal devicements we design to make a reflecting mirror of cylinder paraboloid of an antenna by using amorphous photonic materials. we calculated the transmission of the mirror and the distribution of electric field by using multiple scattering method. the result shows that it can be used as a reflecting mirror of an antenna

    非晶光子材料和光子晶器件的設計提出了用介質圓柱光子晶作微波天線的柱鏡,用多重散方法計算了鏡的透過譜,並模擬計算了天線的電場分佈,初步認為可以用非晶光子材料作微波天線的鏡。
  2. 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,闡明了天線的形成原理;然後在ansys軟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法,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法,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。
  3. After the comparing the simulation results with the theoretic results under the three followed condition : a point light source on the parabola reflector focus, a point light on the ellipsoid reflector focus and a point light source before the parabola reflector focus, a conclusion is gotten that the two results are generally accordant, the accuracy of the simulation software reach the engineering requirements and the computational simulation software of photometric characteristics of headlamp of motor vehicles can guide the design of the headlamp reflectors

    比較了點光源位於器和橢球器焦點的情況和點光源偏離焦點的情況下照度的理論計算結果和採用本文的照度模擬計算結果,其模擬計算結果和理論計算結果基本相符,能滿足工程上的要求,說明模擬計算軟對前照燈的鏡的設計具有很好的指導意義。
  4. With the rapid social development, the traditional reflector is out of date due to its ponderous and bulky shortcomings in modern communication

    由於現代社會對通訊系統靈活機動的要求,傳統的天線笨重、積龐大的劣勢已經日益顯現。
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