It is difficult for students to read the drawing of a combination object in line and surface analysis method introduced in traditional texts.

There are two basic ways of reading a drawing: form analysis method and line and surface analysis method.

Training thinking modes of engineering graphics and teaching methodologies have been presented and discussed in this paper in four aspects: strengthening modeling and description of solid shape, rebuilding system of the projection foundation, using of coexisting models of the solid analyse and line-plane analyses, establishing cooperative and interactive teaching mode.

Analytical solution on the overestimation of thickness of interfacial transition zone around grain with arbitrary convex shape by the section analysis method;