Analysis and Theory Basis of Drawing Transition Line

When ploting the detail drawing,we may come across the problem of transition line's drawing.The form of transition line as well as its beginning and the end points has been mostly a blurry concept in drawing process of transition line.Based on the conditions above-mentioned,this paper makes comparatively detailed analysis to transition line and their beginning and the end point,and has summed up five kinds laws to draw the transition line.The drawing of transition line has provided methods and the theory basis to teaching and the drawing of transition designing.So,detail drawing will be drawn more rational and accurate.