旋梯直徑應在6米以上,正麵繞固定軸連續旋轉. 比轉輪刺激. 如旋轉小於180度, 就成了一個大秋千.

來源: 不開竅於 2020-12-26 12:10:09 [舊帖] [給我悄悄話] 本文已被閱讀：次

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