本文对冰覆盖下的河道水流进行了区域划分，给出了区域分界面上的水流条件。
The paper divides regionally the flow under the ice cover and gives flow conditions of the regional boundary surface.
这个区域是以阿尔弗雷德·华莱士的名字命名，在19世纪，他发现在这条分界线两边的动物群之间存在着非常明显的差异。
This is an area named after Alfred Wallace, who in the 19th century noted that the land-based fauna on either side of this line was distinctly different.
轮廓与边界定义了目标的外表形状，确定了区域之间的分界线，它们是人类与计算机进行目标识别的重要特征。
Contours and boundaries that define object shape and indicate outer limits for regions. They are critical for human or computer recognition of objects.
一条农牧分界线绵延于中国西北地区，由这里将中国分隔成两个不同的经济区域：农耕经济区与游牧经济区。
A line that lies in northwest region of China divided the state into different economic regions: agricultural economic region and nomadic economic region.
明暗界线：月亮或内行星亮和暗的区域之间的分界线。
The dividing line between the bright and shaded regions of the disk of the moon or an inner planet.
本文论述了运用物理光学、射线理论混合分析反射面天线的过程，确定了混合方法在计算一般反射面天线时的分界区域。
In this paper, a hybrid method which combines the physical optics method with the rays theory is used for calculating the radiation fields of the reflector antenna.
边界模糊图像不同区域之间没有明确的分界，用传统的图像分割方法难以得到很好的分割结果。
There is no clear boundary between different areas in borderline blurred images. It is difficult to segment the image successfully using traditional method.
通过实例验证可针对任一复杂的三维区域进行分块贴体网格数值生成，保证区域经分块后，仍能在分界面上具有良好的网格连续性。
The given examples show that the method may deal with arbitrary complex 3-d domain, and the grid continuity on interfaces is promised.
通过实例验证可针对任一复杂的三维区域进行分块贴体网格数值生成，保证区域经分块后，仍能在分界面上具有良好的网格连续性。
The given examples show that the method may deal with arbitrary complex 3-d domain, and the grid continuity on interfaces is promised.
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