On-line courseware is an important part of on-line education, and is main carrier of teaching information.
网络课件是网络教育的重要组成部分，是教学信息的主要载体。
Thus, the research of the tools, which can convert courseware in varied form and format to standard on-line courseware automatically, has great promotion to construct of on-line education resources.
因此，研究将不同格式、不同形式的课件资源转换为标准网络课件的工具，对网络教育资源建设起着积极的推动作用。
This courseware is used for finding the position of the endpoint of two intersecting triangles and drawing the surfaces, the isometric projection of the intersecting line and three-plane projection.
两平面交线课件主要功能用于求解各种位置两平面交线的端点、绘制两平面交线的正等轴测投影和三面投影。
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