求翻译：公差课中的形位公差的教学内容是本课程的重点、难点。教学中利用三维软件进行平面图形和空间立体图形的切换讲授该部分内容，可使学生比较直观地认识图形形状，增强对形状、位置公差教学内容的理解。是什么意思？

Tolerance class of geometric tolerance of the teaching content is the focus of this course, difficult. Teaching the use of three-dimensional graphics and software for three dimensional graphics plane switching part of the teaching, students can be more intuitive understanding of graphic shapes to en

Tolerance in the classroom-shaped position deviation of teaching content is the focus of the course, the difficult. Three-dimensional software for use in teaching geometrical shapes and space three-dimensional graphics to switch some of the contents, and can be taught to enable the students to under

In the common difference class shape position common difference course content is this curriculum key point, the difficulty.In the teaching uses the three dimensional software to carry on the plane figure and the spatial three-dimensional graph cut teaches this part of contents, may make the student

Shape and position tolerance in the tolerance course content are the key points, difficult points of the course. In the teaching of plane figure and space using three dimensional software switching of stereo graphics teaches the part will enable students to understand intuitive graphic shapes, and i

Shape and position tolerance in the tolerance course content are the key points, difficult points of the course. In the teaching of plane figure and space using three dimensional software switching of stereo graphics teaches the part will enable students to understand intuitive graphic shapes, and i