【摘要】 本文在大量实验数据的基础上,研究了收缩率和料流方向、测量时间、工艺条件等的关系,讨论了收缩率的几种表征方式和使用范围,介绍了数据库中收缩率的查询方法。更多还原

【Abstract】 Based on lots of testing data, relationship among plastics shrinkage, flow direction, testing time and processing conditions were studied. Several kinds of expressions of shrinkage and their uses were discussed. The method of shrinkage inquire in the data base was also introduced.更多还原