The service can be subdivided into external service, interactive service and internal service, by which the triangle of service of department store can be constructed.

提出了“商场服务”对商场经营的重要性，将其进一步细分为“外部服务”、“互动服务”和“内部服务”，从而构造了“商场服务三角形”。

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This paper mainly discusses the structure design, internal force analysis and calculation on strength and rigidity of the conveyor triangle frame.

本文主要介绍该输送机三角形支架的结构设计、内力分析、强度和刚度的计算。

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A triangle collapse algorithm is presented, which is based on internal angles weighted and quadric error metrics to simplify mesh models.

给出了一种基于三角形内角加权和二次误差度量的三角形折叠算法来简化三角网格模型。

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