中文摘要：

阐述了STL文件格式的基础知识,采用Pro/E软件,以典型壶类零件为例进行STL文件格式的转换,通过设置不同数值的参数进行精度对比,研究影响STL精度的关键数值。对比分析表明,弦高和步长参数是决定STL精度的关键参数。

英文摘要：

The basic knowledge of STL file format was described and then the conversion of the format was carried out for a pot component by using the Proe software. The precision of different numerical parameters was compared to study the key values of influencing the STL precision. The comparison analysis shows that the chord height and step length are the key parameters to determine the STL precision.