Fold-away rebound exercise device
作者： Paul Appelbaum
DOI:
关键词: Geometry 、 Fold (higher-order function) 、 Structural engineering 、 Position (vector) 、 Engineering
摘要: A portable apparatus for in-place jogging including a housing to which is pivotally mounted structure that supports surface, the support having an in-use position in it locked at 90 degrees housing, and fold-away rotated folded into cavity within housing.
lens.org 参考文章(6)
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