| 摘要 |
<p>Apparatus 1, providing through flow of fluid, comprising a base unit 2 to receive a fluid, having a base 3 and boundary walls 4 rising therefrom to define an open top 5 opposite the base 3, and a substantially planar closure 6 for the open top 5, which closure 6 is adapted for passage of fluid therethrough, there being respective means 7, 8 of the base unit 2 and closure 6 for interengagement of the base unit and closure whereby when the interengagement means 7, 8 are interengaged, a closed unit 9 is obtained.</p> |
