Before implantation, the flexible double - disc patch is pulled into a catheter, collapsing and compressing it lengthwise.
在植入前, 可弯曲的双片补片被拉入导管.
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Parallel slide or double disc valves tend to leak after a short period in this service.
平行滑动或双阀瓣阀门在这种应用场合中经过短暂使用后,容易出现泄漏.
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