Unverified75% confidenceTradeoffTime unknown
铁砂填充分格设计，配重块可自由增减，适合循序渐进增加训练强度，但铁砂颗粒长期使用后可能因摩擦产生少量粉末渗出
1
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75%
Confidence
Long-term
Relevance
-
First Seen
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