| 摘要 |
The invention relates to a hermetically-sealed one-piece lid (11) comprising an annular projection (14) which extends longitudinally and vertically from the inner face of the transverse base (12) of the lid (11). According to the invention, the aforementioned projection is disposed at a distance from the inner face of the lateral protector (13) which is substantially smaller than the thickness of the second container for which the one-piece lid (11) is intended.
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