Unverified80% confidenceDecision RuleTime unknown
调弦稳定性优先选带铜轴机械微调（含金属齿轮细调器）的二弦，纯木轴对儿童手劲小、易跑弦不友好；有金属微调可让孩子快速对准音高，减少练习挫败感
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80%
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Long-term
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