对于占用资源很多的sql语句，查看实际的变量值(字符)而不是参数标记也许对优化器较为有益。
For very expensive SQL statements, the optimizer may benefit from seeing actual variable values (literals) instead of parameter markers.
用此方程计算出的梯度层厚度随渗碳时间变化的关系与实际测量值比较接近。
The relationship between growth of graded layer and carburizing time calculated by the equation is close to experimental results.
采用传统微扰法和基于圆柱曲面修正的微扰法，计算了实际粗糙面掠入射时的后向散射系数，并与有关测量值进行了比较。
Comparison of a set of measured data to numerical computations of the backscattering coefficients for actual natural rough surface by the classical and new perturbation methods were given.
应用推荐