| 摘要 |
<p>A screen for screening a product comprises screening net means (20) provided with evacuation means (26) suitable for evacuating from said screen (1) a fraction of said product retained by said screening net means (20) and further screening net means (4, 12) arranged downstream of said screening net means (20) for receiving a further fraction of said product that has traversed said screening net means (20).</p> |
