拋物面的 的英文怎麼說

中文拼音 [pāomiànde]
拋物面的 英文
  • : 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...
  • : 4次方是 The fourth power of 2 is direction
  1. In this paper, two properties of paraboloid in the textbook analytic geometry is generalized

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

  3. The problems include catmull - clark subdivision surfaces ca n ' t precisely represent standard conicoid except paraboloid, and it ca n ' t modify the shape of limited surfaces when the original control mesh be given

    如: catmull - clark細分曲無法精確表示除常規二次曲;在給定初始控制網格情況下,難以調整所生成曲形狀等。
  4. Concave reflecting surfaces of spherical cap, paraboloid and hyperboloid of revolution are investigated with regard to the dependence of the levitation force on the section radius rb and curvature radius r ( or depth d ) of the reflector

    針對球、旋轉和旋轉雙曲三種形狀反射端,系統研究了懸浮力與反射端截半徑r _ b和曲率半徑r (或深度d )之間本徵關系。
  5. Spherical aberration analysis of refraction imaging for paraboloid and sphere

  6. The technical specification of radiation pattern envelope for paraboloid antenna used in microwave relay communication systems

  7. An intelligent paraboloid truss antenna is designed and its dynamic model is presented by means of finite element method

  8. To investigate the practicability of a solar - direct - pumped fiber laser by using a parabolic dish concentrator, the solar power absorbed by the fiber laser and its absorption efficiency were calculated with numerical method based on the characteristics of solar spectrum in outer space

  9. The basic hexahedral module can be deployed and stowed with the motion of the spring in the diagonal stretchy member, so is the whole structure

  10. Parabolic antenna in a widely used is tracking antenna area, by use the optimum design, it may produce a very narrow beam, it ' s tracking precision is high, but because it ' s beam width is very narrow, the searching target is very difficult

  11. 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

  12. 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

    在毫米波天線分析計算中,把fdtd與理光學法結合起來, fdtd用於具有精細結構饋源及饋電波導一體計算,得到饋源幅度和相位方向圖,以此為依據調整饋源結構,使饋源幅度和相位方向圖為最佳狀態。
  13. 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

  14. Design and analysis of a multi - beam parabolic reflector antenna

  15. They have magnetrons, microwave - generator s, amplifiers and integrated systems

  16. A shape design method for satellite antennas with an offset paraboloidal reflector and a single feed

  17. Because of this, the design about a new kind of reflectors called reflectarray was initiated

  18. This paper proposed a hexahedral deployable space antenna, which is composed of hexahedral modules

  19. 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

  20. The primary mirror. this is the paraboloidal mirror at the bottom of the tube. it has an aluminized surface that reflects starlight to form an image at the focal plane