Objective To introduce the cause of the microstomia and the experience of applying of elongation of the oral fissure to correct the microstomia.

The paper discusses the shedding motion of the heald frame drived by tap-pet cams about opening angle different from shutting angle,applying common shed-ding regular patterns, studys three combining curve equations suited to technological requirement of shed by means of choosing different opening angle,and gives the fea-ture analysis and cornparison each other.

Starting from the load regulation of the flow - line production of high - frequency welded tube, this paper expounds the influence on the load regulation from four aspects of the size of the open angle of pipe billet, the size and position of impeder, technical requirement of inductor, and o.

Using for its experiences and shortages, the improvements inside voltage transformer were presented, such as the stability coil formed by connecting the open-delta, the zero sequence coil from the neutral point of high vo.