This paper focuses on mixing cement concrete batching at how to improve the preparation of precision pneumatic valves, and how to accurately control the concrete slump constant.
主要论述拌和水泥混凝土配料时如何提高气动闸门的配料精度，如何比较准确地控制混凝土的坍落度。
2
Especially in the explosion-proof mixing equipment using the latest and most advanced pneumatic discharge device design theory.
尤其是在防爆混合设备上采用最新最先进的气动出料装置设计理论。
3
The current widespread use of the powder conveying way is to screw conveyor conveying, large mixing floor has adopt pneumatic conveying and scraper conveyor.