Unverified80% confidenceDecision RuleTime unknown
悬挂式实心沙袋填充建议选用碎布+沙层分层填充，纯沙填充下沉板结后底部变硬易伤手腕，PU海绵/碎海绵填充回弹柔软但缺乏拳感，力量训练选布沙混合，减压发泄选纯海绵
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80%
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Long-term
Relevance
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