maxwell formula 中文意思是什麼
maxwell formula
解釋
麥克斯韋公式-
The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。 -
We can infer the em parameters of pure carbonyl - iron from the em parameters of ds of various content by curve - fit simulating and interpolation. maxwell - garnett ( mg ) formula and bruggeman formula is applicable for spherical particles ds
Maxwell - garnett公式和bruggeman公式是適用球形顆粒復合體系的經典計算公式，本文將兩組公式及maxwell - garnett擴展公式運用於羰基鐵粉分散體系。 -
It preliminarily establishes a set of test theory and technical approach to wind tunnel test. specifically speaking, it includes following work : ( 1 ) theoretical analyses on key parameters of ao effect were made. from maxwell equation, the computation formula for focusing intensity of ordered disturbance and the computation formula for pulse peak intensity were derived
初步建立起了一套氣動光學風洞測試試驗的理論和技術，完成的主要研究工作有: （ 1 ）從理論上進行了氣動光學主要參數的分析，從麥克斯韋方程出發，推導了有序擾動的聚焦強度的計算公式及脈沖峰值強度計算公式。 -
Then, we infer the thin film system reflection or the transmittance mathematics value formula and the characteristic matrix representation formula from the maxwell ’ s equations and the suitable boundary condition. we study the automatic design problem of optical thin film
在此基礎上從麥克斯韋方程組和適當的邊界條件出發，推導出了薄膜系統的反射或透射率的數學數值計算公式和特徵矩陣計算公式。 -
First, we simply introduced the optical wave - guide theory : the fluctuation equations of planar wave - guide and the preparation of embranchment wave - guide. then based on maxwell equations and in the paraxial limit we deduced the formula needed in calculating fd - bpm. the refractive index section was n ( x, y )
然後我們在maxwell方程的基礎上，根據慢包絡近似理論，在折射率截面為n （ x ， z ）的條件下，利用有限差分近似來代替偏微分方程，推出了有限差分光束傳播法計算所需要的公式。 -
Secondly we get the electromagnetic distributions in hollow waveguide by doing some operations on maxwell formula. we also get the characteristic formula in hollow waveguide
其次，我們通過對maxwell方程的推導，提出了空芯光纖中各向電磁場分量的解，在此基礎上我們得到了空芯光纖的特徵方程。 -
The numeric method is used to calculate the static thermal conductivity, which is compared with the maxwell formula. the dynamic thermal conductivity is derived from the motion of the nanoparticles
用數值模擬方法模擬靜態導熱系數，並與常用的maxwell公式進行比較；從粒子運動的事實出發，建立了動態導熱系數的計算公式。
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