| 摘要 |
<p>A removable strainer, adapted to seat over the grille of a waste outlet of a bath or sink, is in the form of an apertured disc or plane spiral, provided with a central inclined tab for removal. The disc may be constructed of sheet aluminium, Figs. 1 and 2 (not shown), or moulded plastic, Figs. 3-5 (not shown).</p> |
