蹦極繩隻要有一根鬆了其他的繩子跟著受力不勻也就很快跟著壞了。一般使用期是兩年左右。

來源: Lily168 於 2015-07-13 10:32:25 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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