Bullworker
- 保卫格（保卫格(Bullworker)是一种用于力量训练的健身器材，于20世纪60年代初开始推出市场）
Bullworker
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abstract:
The Bullworker is an isometric exercise device used for strength training originally marketed and sold in the early 1960s. Designed and patented by German inventor Gert F.
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WordNet