| 摘要 |
Nozzle comprises inner and outer parts. The inner nozzle part has a channel which has a series of radial channels which are in line with recesses in the surface of the outer part. There are also a series of recesses. The channels are in contact with the axial channel which discharges. According to the relative position of the inner and outer nozzle parts, the size of the column formed between the two parts can be varied. |
