| 摘要 |
<p>A blast nozzle apparatus (30) which includes a circular inlet (37) to an entry portion (44) with converging top and bottom surfaces (42) and diverging side surfaces (40) which terminate in a throat portion (45) and an outlet portion (46) including diverging side surfaces (40) and top and bottom surfaces (42) terminating in a substantially rectangular outlet opening (39).</p> |
