| 摘要 |
A metal container comprising a sheared portion in a part of the wall thereof, a projecting portion formed adjacent to the sheared portion and outwardly projecting from the wall of the container, the projecting portion having a fractured side surface and the dimension of the projecting portion in the direction transverse to the side surface increasing in the direction outwards of the container, and a gas introducing passage extending along the sheared portion and the fractured side surface and through the wall of the container.
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