discrete propagation 中文意思是什麼
discrete propagation
解釋
不連續傳播- discrete : adj. 1. 分離的，分立的；顯然有別的。2. 不連續的；【數學】離散的；【哲學】抽象的 （opp. concrete）。adv. -ly
- propagation : 持續培養
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The numerical calculation simulation shows that the fgb will change its shape upon propagation. ( 5 ) using the quasi - discrete hankel transform ( qdht ), the fast calculation code simulating the propagation of cylindrical symmetry laser beams passing through high power laser amplifier system is built up for the first time. the code is applied to
（ 3 ）明準訴散漢克爾變換編制寧旋轉對稱光束在高功率激光放大系統中傳輸的快冰汁彝摸擬程序，利用該程序對超高斯光束在多麟光放大系統中的傳輸和神光紅栩櫥化光傳。 -
In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。 -
Finite difference method can deal with regular boundary conditions. in this paper, we discrete the water domain into rectangular meshes, and simulate the propagation, reflection and diffraction of water waves. we just specify waves source, the movement of water waves can be simulated automatically
有限差分方法能夠處理具有規則邊界水域的水流現象，在本文中，我們把求解的水域離散成結構矩形網格，對水流的折射、反射、繞射等水流現象進行了動畫模擬，我們僅僅指定產生水流動畫的波源，水流動畫的細節均由數值方法產生，不需要人工的干預。 -
These unusual densities of states were due to the discrete propagation modes peculiar to the photonic crystal composed of alternative left - handed and right - handed materials, and could be used to make very narrow filters totally different from any conventional types of filters
這些禁帶中的態密度是由左右手材料構成的一維光子晶體所特有的，它們可用於製造完全不同於常規濾波器的、頻帶狹窄的新型濾波器。
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