This article makes an extension on the problem of integral factor in the total differential equation and has drawn two theorems.
本文就恰当微分方程的积分因子问题进行推广，得出两个定理。
The effect of an elastic square inclusion on a crack tip's stress intensity factor in an infinite elastic body is considered and the new boundary integral equations are derived.
研究无限弹性体中正方形弹性夹杂对裂纹应力强度因子的影响，给出了问题的新边界积分方程。
The effect of an elastic square inclusion on a crack tip's stress intensity factor in an infinite elastic body is considered and the new boundary integral equations are derived.
研究无限弹性体中正方形弹性夹杂对裂纹应力强度因子的影响，给出了问题的新边界积分方程。
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