Repairment of vermilion defects close to mouth angle with a buccal myomucosal flap;

The test studies of the axial flow type gas-liquid cyclone with the outlet angles of guide vane of 15°, 20°, 25° and 30° show that in the dilute flow, the separation efficiency of guide vane with angle of 25° is the highest one, and guide vane with angle of 15° is the lowest.

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.

They include not only the intersecting curve models of pipe-pipe, pipe-plate, Miter joint and multiple laps, but also the cutting models of groove angle in the light of SY/T4802-92 and AWS standards.

The result shows that the edge angle has an important effect on the cutter blade endurance in the cours e of fiber cutting.