箱包关键结构的分析设计(Ⅱ)

The Analytical Design for the Key Structure of Case and Bag

本文对箱包的结构进行了全面的分析论述，并指出了箱包结构设计的关键。

An analytical description about the whole structure of case and bag from every aspects were made. Andthe keys of the structure design were pointed out.