将快速成形技术与传统加工方式进行比较，介绍了快速成形的原理、分类，以及主要的快速成形工艺。
The principle, classification and main technology of rapid prototype have been introduced in comparison with conventional working processes.
欧洲采用较传统的生产方式，加工与纺织的人工成本因而较昂贵，售价也较高。
The higher labor costs for milling and weaving in Europe, where more traditional manufacturing methods are employed, account for the higher purchase price.
世界各地都在通过鼓励女性参加工作、孩子有机会得到教育来改变传统的家庭生活方式。
And everywhere, it is changing traditional family life by enabling women to work and children to be educated.
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