| 摘要 |
<p>A liquid-preserving device (4) that comprises a first body (1) containing the liquid, a second body (2) closing the lower end of the first body (1), said second body (2) comprising means (13) for extracting air from the interior of the first body (1), and a third body (3) closing the upper end of the first body (1), which comprises means (12) for retention or discharge of the liquid.</p> |
