Casting velocity affects greatly the slab liquid-core position.
铸造速度是对铸坯液芯位置影响很大的因素。
The less gas volume may be used while the higher casting velocity conditions or smaller slab size.
实际吹氩量标准大断面临界吹氩量可稍大，同样断面条件下，高拉速吹气量设置小而低拉速大。
The single-hole casting blast experiment was conducted in lab. The formation process of blasting crater was observed and the casting velocity and its distribution rule was analyzed.
在实验室进行了单孔抛掷爆破试验，观测了台阶爆破漏斗形成过程，分析了抛掷速度及分布规律。
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