扩散

• The migration of iodide ion between layers is controlled by barrier interlayers .
  碘离子在层间的扩散作用可以用隔层加以控制。
• The other type of initial value problem of interest for us is the diffusion equation .
  另一类我们感兴趣的初值问题是扩散方程。
• Carcinoma of the oesophagus usually extends by local invasion and lymphatic spread .
  食管癌通常通过局部浸透和淋巴扩散而扩展。
• Surging is ordinarily associated with separation and re-attachment in the diffuser .
  喘振通常与气流在扩散段内的分离和再附相联系。
• He suggested that the varieties tested had different diffusive resistance to co2 .
  他提出，供试验用的品种对二氧化碳有不同的扩散阻力。
• Aphid count on plants in fields do not correlate with virus spread in the same fields .
  田间植株蚜数与同块田内病毒的扩散程度间无相关性。
• The description of atmospheric dispersion phenomena remains quasi-empirical and statistical .
  大气扩散现象的说明仍然是准经验性的和统计性的。
• Many of the above-mentioned trends can be rationalized in terms of quasi-steady diffusion theory .
  上述的许多问题可用准稳态扩散理论加以推理。
• To use these curves, be sure that the diffusion profiles agree with the assumed profiles .
  在应用这些曲线时，应确保扩散分布与假定的分布一致。
• Entomologists have tended to underestimate the importance of colonization through dispersal .
  昆虫学家倾向于低估在扩散过程中定居现象的重要性。