Boundary layer phenomena of third - order nonlinear equation is studied in this paper 摘要研究某类三阶非线性方程的边界层现象。
2.
The boundary value problems of singular perturbation with boundary layer at turning points are discussed . the asmptotic expansion are constructed . and the uniformly valid asmptolic estimation is obtained 主要讨论了在转点处出现边界层现象的奇异摄动边值问题，构造了形式级数解，得到了一致有效的渐近估计
3.
The development and principle of satellite - borne synthetic aperture radar ( sar ) are presented . the phenomena of mabl that can be detected by sar are also preliminarily summarized 同时介绍了卫星合成孔径雷达( sar )的发展，工作原理，对海洋大气边界层的成像机制，并初步总结了sar观测到的各种海洋大气边界层现象。
