| 摘要 |
A penetrable membrane structure for incorporation in a flow path of a coupling includes a body having a first face and an opposite second face, one of the first and second faces including at least one major portion and at least one minor portion. The major portion includes a major thickness between the first and second faces that is greater than a minor thickness of the minor portion, and the minor portion forms a channel transversely extending into one of the first or second faces, the channel of the minor portion including sidewalls each adjacent to the major portion. The sidewalls of the channel extend toward each other in a converging configuration.
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