random-walk diffusion 中文意思是什麼

random-walk diffusion 解釋
無規則游動擴散
  • random : n 〈罕用語〉胡亂行為，偶然的[隨便的]行動[過程]。adj 1 任意的，胡亂的，隨便的；（話等）信口亂說的...
  • walk : vi 1 走，步行；【籃球】帶球走，走步；（馬）用常步走。2 走著去；散步。3 （鬼等）出來。4 〈比喻〉處...
  • diffusion : n. 1. 散布，發散。2. 傳播，普及。3. 冗長。4. 【化學】滲濾。5. 【物理學】擴散，漫射。
  1. The usual diffusion random walk treatment does not consider any interaction between the particles.

    一般的擴散無規則運動理論並不考慮粒子間的任何作用。
  2. Spatial distribution and time scales of atmospheric diffusion over beijing area are revealed by means of a random walk simulation model and practical meteorological data with a specified emission source from the city. results show a southward transport pattern for wintertime while a northwest transport of pollutants in summer. the area is the least evidently influenced by the emission source in spring, while the largest in autumn. the time spent for instantly emitted material removing from the model domain varies from winter - spring to summer - autumn. the former was shorter one of less than 20 hours ; the latter was longer one of approximately 30 hours. distribution of occurrence probability for different removal times was not symmetry. reducing slowly at the end of longer removal time, probability exists for pollutants remaining in this area a long time

    結果表明，冬季示蹤物偏南夏季偏西北的輸送明顯春季擴散影響范圍最小秋季最大。示蹤物從200km200km模式區域輸出的平均時間去除時間明顯分為冬春季和夏秋季兩組，前者較小，平均在20h以下，後者較大，平均約30h 。不同去除時間出現的頻率分佈是非對稱的，在長去除時間一側，出現頻率下降緩慢，顯示污染物有在該區域內長時間滯留的可能。
  3. Diffusion patterns ; time scales ; random walk simulation ; beijing area ; historical state

    擴散模態時間尺度隨機遊走北京地區歷史背景
  4. The spectral dimension is estimated by monte cario ( random walk ) method. the calculated results show that mass diffusion in fractal media is non - homogeneous and nonlinear

    上述模擬的結果使我們對分形多孔介質中的熱傳輸規律有了更深的了解。
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