机械产品的布局设计问题属于复杂的三维布局问题。
The layout problem of mechanical product belongs to complex three-dimensional layout problem.
工程中存在着大量的布局设计问题，很多都是NPC问题，很难求解。
There are a large number of layout design problems in engineering, most of which are NPC problem difficult to solve.
研究表明，开发知识驱动的设计工具，是解决机翼结构布局设计问题的一条可行途径。
The study shows that developing knowledge-driven design tools should be a feasible approach to the wing structural layout problem.
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