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This part of the extended data mainly examines the knowledge points of engineering drawing:

It is an important basic compulsory course in higher engineering courses. This course is a subject to study the drawing and reading of engineering drawings. It studies how to use projection method (see descriptive geometry) to solve space geometry problems and express space objects on the plane.

Based on the projection theory of descriptive geometry, with rulers, compasses and drawing boards as tools and blackboards, wooden models and wall charts as media, it has a history of more than 200 years. Mechanical engineering drawing is an introductory course that embodies the characteristics of engineering, and it is also one of the professional basic courses that engineering students must study.

As the foundation of creative thinking, it plays an important role in cultivating students' spatial imagination and conception ability and promoting the process of industrialization. Engineering drawing is an indispensable technical document in production and a universal "engineering technical language". Drawing and reading engineering drawings correctly is an essential basic quality for an engineering technician.

Drawing specification-basic provisions of national standards for technical and mechanical drawings, CAD standards, views, drawing methods, dimensioning methods, etc. And reading the projection of the object containing the above contents. Drawing and reading professional drawings-drawing and reading engineering drawings related to this major, and correctly understanding the shape, size and technical requirements.