In view of the Descriptive Geometry and Mechanical Drawing and the status of the situation, that the purpose of teaching should be more scientifically designed to extract the essence of courses.

针对《画法几何及机械制图》课程的现状和面临的形势，指出其教学设计的宗旨应该是更科学地提炼课程的精髓。

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But the effect of teaching mechanical drawing is less correlative with MCT test and does not show a great improvement in the students' space cognitive ability.

但机械图部分的教学效果与MCT得分成微弱相关，对学生空间认知能力提高较小。

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According to the needs of Computer-Aided Instruction and the characteristics of mechanical teaching in universities, a mutual drawing system of mechanical graphics (MCAD) is developed.

根据目前高校对计算机辅助教学的需要和理工类院校力学教学的特点，开发了交互式力学图形生成系统(MCAD)。

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