An exploration of axle centre pressure attenuation rule proves that the effective injection distance is 9~15 times as much as the diameter of nozzleentry.
对轴心压力衰减规律的探索，证明其有效喷距为喷嘴入口直径的9～15倍；
2
The non-oxidizing zone is consisted of entry sealed room, waste gas preheating zone, direct heating zone, and furnace nozzle and flue gas exhausting system.
无氧化段由入口密封室，废气预热区，直接加热区，炉喉，废气排放系统组成。
3
The clogs on the submerged entrynozzle of type 304 and 321 stainless steels were investigated, and the mechanisms of clogging were discussed.