用characteristic line造句子，“characteristic line”造句

2、Three dimensional form plane line called the line body, characteristic line body includes not only the plane all the lines, but also has its own unique form.

1、These are two families of straight line, known as the characteristic lines.

3、The characteristic line equation of adaptive bending is established and applied to the numerical control of the bending forming of ribbed structural parts.

4、In this paer, by the use of the method of characteristic line of stress wave, a prediction analysis for the sacond impact of an elastic bar impacting on a rigid block is given.