介绍了金属丝网过滤技术的结构特点及作用机制，重点阐述了压降特性及捕集能力。
Structural characteristics and functional mechanisms of metal mesh filtration technology were introduced in this paper. Pressure drop and trapping efficiency were emphasized.
分析了数据挖掘技术应用于专家系统的可能性，用粗集理论和集对分析理论解决专家系统中规则的抽取和过滤问题，提出了一种新的规则提取方法。
The possibilities of applying data mining technology to expert system are analyzed. A new method for drawing and filtering control rules by using rough sets and sets pair analysis is proposed.
分析了面向数字样机装配建模的特点，分析了高级装配技术中引用集和组件过滤器的作用。
On the basis of analyzing assembly modeling characteristics of DMU for complex product, the author analyzes functions of reference sets and the components 'filter within advanced assembly techniques.
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