如此，既能与边界单元几何形状基本拟合，又能高精度地模拟裂纹尖端附近位移和应力变化规律，并提高计算效率。
So such, both shape consistent with boundary element geometrical shape, and simulate crack tip close-by variety law of stress and strain with higher precision, and enhancing calculative efficiency.
本文介绍了砂轮静平衡的两种方法，即快速平衡法和计算平衡法，其特点是操作简便，并提高了平衡精度和效率。
Two methods, quick operation and simple calculation, of grinding wheel static balance are treated. They are both characterized by simplicity and quickness, with rather high accuracy and efficiency.
应用本文的方法对小型再入弹头尾舵进行稳健设计，并提出一种提高再入弹头滚转异常概率计算效率的方法。
I the latter part of this paper, some re-entry warhead rudders is designed by using the MRD and a new method is proposed to calculate the probability of re-entry vehicle roll abnormity.
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