An exploration of axle centre pressure attenuation rule proves that the effective injection distance is 9~15 times as much as the diameter of nozzle entry.
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；
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。
The clogs on the submerged entry nozzle of type 304 and 321 stainless steels were investigated, and the mechanisms of clogging were discussed.
分析了304和321不锈钢连铸水口结瘤物的物相，探讨了结瘤机理。
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