| 摘要 |
<p>The container partic. a bottle fabricated in one piece, closed and filled during fabrication, comprises a head element in two parts, one internally threaded and the other externally threaded, the two parts being joined by a breakable seal. The seal may be an annular groove and one part of the head provides a stop for the other, so that when the seal is broken the contents may be partially removed and the stopper replaced. The advantage is that the stopper may be replaced after use.</p> |
