通过两个算例的数值解与精确解的比较，说明边界单元法是求解工程声学问题的一种有效方法。
Numerical solutions of two examples are compared with analytical ones, illustrating the more effectiveness of BIE method in engineering acoustics.
本文提出构造有限单元的新方法——精确有限元法。
In this paper, a new method, exact element method for constructing finite element, is presented.
结果表明，该方法可有效提取出相位信息，从而为分立表面的大型光学镜面各单元的精确定相提供了一种简单有效的方法。
Sequentially it gives a simple and effective method for accurate phase detection of the segmented mirrors of a huge combined mirror.
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