After graduation, BIE is Economics fancy, become a first-line star, but AFF has become BIE broker.
大学毕业后，BIE被经济公司看中，成为了一线明星，而AFF。
Hence, a new stress natural BIE is developed, in which there only exist the strongly singular integrals instead of the hypersingular integrals in the conventional stress BIE.
研究二维弹性力学问题边界积分方程，通过分部积分变换消除了常规导数边界积分方程中的超奇异积分，获得仅含强奇异积分的应力自然边界积分方程。
Hence, a new stress natural BIE is developed, in which there only exist the strongly singular integrals instead of the hypersingular integrals in the conventional stress BIE.
研究二维弹性力学问题边界积分方程，通过分部积分变换消除了常规导数边界积分方程中的超奇异积分，获得仅含强奇异积分的应力自然边界积分方程。
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