So, choose as far as possible to improve the nozzle of small high cutting speed and cutting quality is useful, but the nozzle at low altitude may cause double arc phenomenon.
所以，选用尽量小的喷嘴高度对提高切割速度和切割质量都是有益的，但是，喷嘴高度过低时可能会引起双弧现象。
Induced by the high-speed feed jet flow, the solid particles above the feed nozzle tended to flow down, and a reverse flow zone was formed along the riser wall.
受喷嘴区高速射流的影响，喷嘴上方固体颗粒呈向下流动趋势，形成一个诱导回流区域。
The scarfed nozzle is used in engines which can produce reversal thrust, or to produce revolving torque on turbine rocket engines at high speed.
斜切喷管+常用于产生反向推力，或产生旋转力矩使火箭高速旋转的涡轮式火箭发动机中。
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