Preparation of fuel and transport system for coal fired pressurized fluidized bed always needs pneumatic method for feeding the fuel into the pressurized tank and then to the furnance.
燃煤增压流化床的燃料制备与输送系统往往需采用气力输送方法送入加压罐后再送入炉内，系统复杂。
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。
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