求翻译：形状和位置公差是公差课教学内容的重点和难点。教学中利用三维软件进行辅助讲授该部分内容，可使学生比较直观地想象出图形形状，增强对形状、位置公差教学内容的理解。是什么意思？

Shape and position tolerance teaching tolerance is the focus of the content and difficulty. Teaching software to assist in teaching the use of the three-dimensional part, students can imagine a more intuitive graphical shape and enhance the shape, location, teaching tolerance understanding of the co

Shape and location tolerances tolerances is the point of emphasis and difficulty teaching content. Instruction in using 3D software to support teaching, the part of the contents may be making it hard for students to imagine that a more intuitive graphical shapes, shape, position tolerances to enhanc

The shape and the location tolerance are the common difference class course content key point and the difficulty.In the teaching uses the three dimensional software to carry on the assistance to teach this part of contents, may cause the student to imagine the graph shape quite intuitively, strength

Shape and position tolerance is the emphases and difficulties of the content of the teaching of tolerance. Teaching using three dimensional software-aided teaching in this section will enable students to imagine a more intuitive graphical shapes, enhance understanding of the teaching content of shap

Shape and position tolerance is the emphases and difficulties of the content of the teaching of tolerance. Teaching using three dimensional software-aided teaching in this section will enable students to imagine a more intuitive graphical shapes, enhance understanding of the teaching content of shap