| 摘要 |
<p>A device, comprising: a first means for providing a first fluid (28) comprising a channel (31), a first fluid entrance port and a first fluid exit port; a second means for providing a second fluid (29) comprising a channel (32) positioned concentrically around the first means, the second means comprising a second fluid entrance port and a second fluid exit port; and a pressure chamber (23) for providing a pressurized fluid (30) to an area surrounding the first and second fluid exit ports, the pressure chamber comprising a pressurized fluid entrance port (24) and a pressurized fluid exit port (26) positioned downstream of the first and second fluid exit ports. <IMAGE></p> |
