| 摘要 |
A buoyant wheel (10), for use in soft terrain or fluid mediums, having a circumferential boundary (C) and a longitudinal boundary (L), which comprises a hollow sealed chamber having a plurality of concaved segments (21a, 21b, 21c, 21d) in circumferentially spaced relation wherein each concaved segment (21a, 21b, 21c, 21d) has a length substantially equal to the longitudinal boundary (L) and adjacent concaved segments merge at the circumferential boundary (C).
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