并结合实例，细致的分析了常见的回转体相贯线，为计算机绘图提供了理论依据。
Then combined with teaching example, detailed analysis on intersection curve of normal revolution solid is provided, theoretical basis is advanced for computer graphics.
本文介绍依据模具设计中的经验判断和经验公式，开发研制具有推理、计算、绘图功能的设计软件。
Based on the empirical formulas and judgement, a software being capable of inferring, calculating and drawing was developed and introduced in this paper.
给绘图机设计方案的修改提供了可靠的理论依据。
This result can be used as a reliable theoretical basis to revise the design scheme of the draughter.
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