| 摘要 |
A filter includes a first member, where the first member includes a first member surface, at least one first opening, at least one second opening, and at least one third opening positioned between the at least one first opening and the at least one second opening. The at least one third opening may be smaller than the at least one first opening and the at least one second opening. A first member sidewall may extend substantially normal from the surface. The filter includes a second member removably connected to the first member. The second member includes a second member surface, at least one second surface opening, and a second member sidewall positioned adjacent to the first member sidewall. The second member sidewall may extend substantially normal from the second member surface. |
