If not have a proper method to calculate the safety of arc dam , the development of precision in calculation will have no significance 如果没有一种计算拱坝安全性的可靠度方法，计算精度的提高意义并不大。
The new model saves lots of time and resource of computer and has more facilitation when it compares with the 3d numerical model 因此新建立的部分水深平均二维水质模型与全水深平均模型相比具有更高的计算精度。
In theoretical computation formula the mass absorption coefficient is an important parameter to affect computation precision of sediment concentration 质量吸收系数是决定理论计算公式计算精度的一个重要参数。
The precise integration method of differential equation was presented by using 2 algorithm , its numerical precision was also analyzed 运用指数矩阵的2 ~ n类算法，构造了微分方程的精细积分算法，并分析了计算精度。
The method is concretely applied to calculate the concerned energy states of helium - like atoms , and the calculation precision can be up to 99 % 并将这些方法具体用于计算类氦离子的有关能态，计算精度可以达到99 % 。
Secondly , the precision of diffraction field of the edges of targets has been greatly advanced by improving the original method of detecting edges 其次，改进了原先的棱边检测方法，使得棱边绕射场的计算精度大大提高。
According to the analysis mentioned above , a set of recursive formula is found whose precision is equivalent to that of frequency - domain method 本文通过理论分析，找到了一种在计算精度上与频域方法相当的时域递归方法。
The comparison between numerical calculations and practical experiments shows that the established method has good precision and high efficiency 数值计算和实验结果表明，该文方法具有良好的解析计算精度和较高的计算效率。
In calculation , cubic spline curve is used to instead contour line . this method can increase the precision of curvilinear distance measurement 并在具体计算时，采用三次样条曲线代替轮廓线，提高了曲线长度的计算精度。
Using afem based on local error estimation , we can give relevant mesh on different frequency phase with required precision 而基于局部误差估计的自适应有限元法在不同的求解频率段，根据计算精度的要求，采用相应的网格划分。
