BFGS algorithm is one of the most effective methods in solving the non-constrained optimization problems.
BFGS算法是解无约束优化问题的公认的最有效的算法之一。
2
For the first time in the United States, a patient may retain some ankle mobility with this non-constrained, mobile-bearing device.
依赖于这个非强迫性移动-支承装置，美国的患者是首次保留部分踝关节活动性。
3
The reason that non-profits need help, they say, is they they’re often cost constrained – or if they’re not, they get criticized for spending a lot of money on flashy websites.