带时间和边数约束的双约束最短路问题是NP完备的。
The shortest path problem with two additional constraints in transition time and number of edges is NP Complete.
重点介绍了单约束、双约束模板混凝土施工，节点处理，屋面混凝土标高控制，混凝土养护等施工工艺。
Furthermore, the concrete construction with single and double constraint formwork, joint management, elevation control, and concrete maintenance are introduced in detail.
介绍双约束重力模型参数标定的方法，并以西部某一新城区居民出行分布为例，详细给出参数标定的实现过程。
This paper presents a method to establish a 2-D geometrically constrained model, and to realize the modification of topologic relation of geometric models.
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