但由于边界元法得到的求解代数方程组的系数矩阵是满阵，对其解题规模有很大的制约作用。
But the scale of the problem that can be solved by BEM is greatly limited, because the matrix of the system equations generated by BEM is fully populated and unsymmetrical.
街道上满是聚集的人群，传出一阵无声的哭泣。
A voiceless cry emanated from the crowd gathering on the street.
美丽的女孩依然一声不吭，眼里满是泪水，脸上一阵儿红，一阵儿白。
The beautiful girl remained silent, but there were tears in her eyes, and her face was white and red after each other.
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