Analysis of the Difference Between the New National Standard of Mechanical Drawing and International Standard

The national standard of Mechanical Drawing is the basis of mechanical drawings.This paper briefly describes the development process of the national standard of Mechanical Drawing,the difference between the new national standard and international standard and the present situation of implementation of the new national standard in China,points out that in order to improve the overall technical level of the machinery industry,ensure the quality of products,shorten gradually the gap with the developed countries,it must conscientiously carry out and implement the new national standard,and expounds the inevitable trend of the development of the international standard and the significance of promoting the new national standard.