Take a look at what went wrong by back tracking and thinking about similar past events.
通过回溯和考虑过去的相似的事件，看一看什么地方出了错。
The back tracking method is a kind of optimum-seeking retrieval method by which forward retrieval is done according to the optimum-seeking condition to arrive at the goal.
回溯法是一种选优搜索法，按选优条件向前搜索，以达到目标。
Comparing with the outward tracking, the back tracking of "Yiwu-Xinjiang-Europe" cargo train has not realized the normalization of operation. But to those importers, the strength has appeared.
和去程相比，“义新欧”班列返程还未实现常态化运营，但对于进口商品来说，优势已经显现。
We present an affine scaling trust region algorithm with interior back - tracking and subspace techniques for nonlinear optimizations subject to linear inequality constraints.
使用仿射变换内点回代技术的信赖域子空间算法解线性不等式约束的非线性优化问题。
We present an affine scaling trust region algorithm with interior back - tracking and subspace techniques for nonlinear optimizations subject to linear inequality constraints.
使用仿射变换内点回代技术的信赖域子空间算法解线性不等式约束的非线性优化问题。
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