In the compound process of ultrasonic vibration and grain machining, the discontinuous grinding mechanism caused by ultrasonic vibration is the main factor decreasing normal grinding force.
深入研究了超声振动和磨粒切削的复合过程，指出超声振动形成的断续磨削机制是降低法向磨削力的主要原因。
2
The material's formula of Zirconium and Titanium far-infrared grain drying compound ceramics radiant was made certain.
确定了锆钛系远红外谷物干燥复合陶瓷辐射板的原料配方。
3
It may also use signal process system to decrease noise efficiently for compound expanded pipes, due to austenite rough grain size.