在区域生态环境建模与制图理论方法的指导下，就北部湾(广西)经济区和张家界旅游区两个案例区展开生态环境研究。
Under the regional ecological environment modeling and cartography theories and methods, we choose Beibu Gulf (Guangxi) economic zone and Zhangjiajie tourism area as the two cases.
本文通过出口国外的制冰机设计研制的实例，介绍了三维建模与工程制图技术在产品设计中的应用。
In the article, a design example of an export ice machine is given to describe the application of 3d modeling and engineering drawing technique to product design.
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