The boundary layer behavior of a class of semilinear singular perturbation problem is studied.
研究了一类奇摄动半线性边值问题解的边界层性质。
The subsurface boundary condition is determined by behavior that electromagnetic waves attenuated in the earth, and the modified perfect match layer is for air boundary.
地下边界根据电磁波在导电媒质中快速衰减的特性设定，将改进的完全匹配层用于空中边界。
The warm, moist air in boundary layer is very vigorous, but the behavior of cold, dry air is weaker before hail occurrence.
冰雹发生之前，边界层内暖湿空气十分强盛，而中层的冷干空气活动一般并不明显。
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