While designing the algorithm, we have considered the situation at large. Thus, the algorithm is feasible in solving most of the actual stock cutting problems especially in large scale.

算法设计时考虑了普遍的情况，所以算法在解决大多数实际下料问题，特别是大规模下料问题时是切实有效的。

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Therefore it's of important theory and actual meanings to study the methods of solving the two problems.

因此，研究解决这两个问题的方法有重要的理论和实际意义。

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Aiming at the actual problems of teaching of math education and math curriculum, the author brings forward the structural models and the curriculum theory of Problems-Solving teaching.

针对传统数学课程及教学过程存在的问题，提出了“问题解决教学”形式的数学课程理论，并构建完成了其教学结构模式。

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He cautions that many of the early ventures have focused on building cool apps, rather than solving actual problems.

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