所说的喷管为环形中空管体，贯通的喷孔沿喷管的圆周间隔分布。
The spray pipe is a ring hollow pipe body, and the through spray orifices are alternatively distributed around the spray pipe.
所说的喷管为环形中空管体，贯通的喷孔沿喷管的圆周间隔分布。
The spray pipe is a ring hollow pipe body, and the through spray orifices are alternatively distributed around the spray pipe.
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