通过实验考察了喷枪喷嘴结构不同和喷枪平面位置不同条件下吹气对熔池搅拌的影响；
The influences of nozzle design and position of injection lance on the mixing time of hot metal in the ladle were experimentally investigated.
设计的微弧等离子喷枪采用了独特的气路结构、喷嘴结构和中心轴向送粉方式；
The micro-plasma spraying gun adopted unique passage and spraying nozzle structure and center axial to be sent the powder method.
作为超音速电弧喷枪的关键部件之一，拉瓦尔喷嘴设计一直是人们研究的一个重点。
As one of the key parts of a super-sonic arc-spraying gun, the Laval nozzle design is still a pivot for researchers.
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