We cast these ranging measurements as a set of distance constraints, thus forming an over-determinedsystem of equations suitable for non-linear least squares optimization.
我们将这些距离测量看作距离限制集，从而构成一个超定的系统方程，适用于最优非线性最小二乘。
2
The problem of gravity field recovery can be attributed to the solution of overdeterminedsystem of equations.
重力场恢复最终归结为超定线性方程组的求解问题。
3
After ethanol precipitation, OPC was separated by ethyl acetate-ligroin system. Content of OPC was determined by normal butyl alcohol-hydrochloric acid method at 546 nm to be over 90%.