1, He then treated the evolute of a plane curve.

2, Construct the nephroid and its evolute.

3, And emphasizes the form principle of the evolute and involute tooth profile curve.

4, The intrusive rocks evolute in the direction of the intermediate, acid-intermediate to the uhraacid.

5, Rudders used in China's vessels did evolute from oars according to the undoubted excavated cultural relics and the relics handed down from ancient times.

6, Based on above, the graphics simulation of the evolute and tooth are finished, which provides theory basis for this new kind of gears.

7, The paper explains three types of evolute of cone curve, and introduces curvature center on top of cone curve and drawing way with compasses and ruler of curvature circle.

8, Denote the center of Curvature at by. When the point moves along the plane curve, the trace curve of the point is called the evolute of the curve, denoted by, and is called the involute of the curve.

9, When the point moves along the plane curve , the trace curve of the point is called the evolute of the curve , denoted by, and is called the involute of the curve .

10, Penalty as a reaction to crime, was created because of culture, and was evolute because of cultural development and evolution,[http:///evolute.html] and the reprieve of penalty is the direct impetus to cultural progress.

11, Process of parametric modeling of bevel gear with standard evolute tooth on PC based CAD system is presented.

12, Technological innovation is a complicated system, and this system always evolute from inferior to upper.