SFCM has many advantages, such as the convenience of single-tooth flying cutter fabrication, simplicity of cutting process of worm gear teeth, and higher efficiency of continuous index than single-tooth index.

A new method to hob multi-head worm with fly cutter;

The Simulation Analysis of the Worm Wheel Cut by Fly Cutter;

In order to avoid the resistance between the flying cutting tool and the machined worm wheel and to guaran-tee the machining quality,the working orthogonal clearance of the flying cutting tool should not be less than a certain value.

Inteaching activity,a teacher acts role of director,role of actor,role of tutor,role of friend,role of example,role of research.

The regeneration must bring about new research topics to the audience, the actor and the list of operas.

An actor needs to study play scripts well,and deelply understand the original intention of the play writers before he could re-create the images of own character.

Its value is to put foward or reflect such matters as the social activities, classification, popularization in Southern China, the criteria of evaluation and living condition of the actors of zaju plays in Yuan Dynasty, which are required to give much more attention to.

The problem of experience and performance is in fact to study how opera actors create roles or the methods when they play the operas.