Unverified90% confidenceDecision RuleTime unknown
少儿排球训练优先选PU/超纤软皮排球(重量200-230g,标准5号成人球为260-280g),软皮球触感软、砸手痛感低,能减少孩子对垫球的恐惧
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90%
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Long-term
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