以下为句子列表：
英文: According to adequate case knowledge in manufacturing practice a case-based CAD system of extrusion die has been established, in which experts' knowledge and design experience have been included in die structure databases.
中文: 摘要本文根据生产实践中丰富的实例知识建立了一套基于实例的挤压模具CAD系统。
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英文: Experienced with mechanical drawing and extrusion die design.
中文: 具备机械制图和挤出模具设计经验。
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英文: For realization of rapid design of and reduction of the repeated work, a knowledge-based design system for extrusion die design of axisymmetrical parts has been developed based on the UG/NX, via variational modeling and assembly technology, combined with
中文: 摘要为了实现回转体零件挤压模具的快速设计，减少不必要的重复性工作，通过变量化建模和装配技术，并结合人工智能技术和多变性设计技术，在UG/NX平台上开发了回转体零件的挤压模具智能设计系统，实例研究表明所建立的系统是有效的。
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