The single tube respective jet grouting, enlarging nozzle diameter and specific slurry injection technology are proposed.
提出采用单管分喷工艺、增大喷嘴直径以及特殊注浆工艺等方法。
2
According to characteristics of chemical industry process of production, this paper details the pneumatic diaphragm valve, s choice on type, acting mode, specific property of flow and diameter size.
本文就气动薄膜调节阀类型、作用方式、流量特性和口径大小的选择，结合化工生产的特点作了较详细地阐述。
3
The result shows that adsorption and desorption performance of Benzene vapour by activated carbon are related to the specific surface, hole volume, hole diameter and distribution of hole.