| 摘要 |
A container closure system such that an uninstructed person would find it difficult to remove the closure. Helical screw threads on the container and on the one-piece closure have detents and discrete thread portions engageable under the influence of a spring means once the closure has been screwed onto (cap) or into (stopper) the container to a certain extent. Unscrewing can only be effected by firstly overcoming the spring means to separate the locking detents/thread portions and subsequently turning the closure while continuing to overcome said spring means.
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