| 摘要 |
<p>Apparatus for supplying a fluid comprising a pipe having at least one aperture through a wall of the pipe, each of the at least one apertures comprising a first portion in an inner surface of the wall, a second portion in an outer surface of the wall, the first portion intersecting the second portion to form an opening, the first portion having a first cross-sectional area at the inner surface that is greater than a second cross-sectional area of the opening; wherein the first cross-sectional area and the second cross-sectional area have a first ratio within a first predetermined range so as to enable fluid flowing through the pipe at a predetermined flow rate to exert a predetermined pressure to spray fluid from the at least one aperture to atmosphere and also to flush the first portion.</p> |
