This will prevent damage to the disc sealing edge.

这样可以防止阀瓣密封边缘的损坏。

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Valves should be installed with the disc in the closed or almost closed position. This will prevent damage to the disc sealing edge.

安装阀门时，蝶板应该处于关闭或几乎关闭的位置。这是为了防止蝶板密封装置受到损坏。

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For example, during wound healing, cells at the edge of the wound undergo a EMT process and migrate to the middle for sealing the wound.

例如，在创伤愈合中，伤口边缘的细胞经历EMT过程并迁移到伤口中间而进行愈合。

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