Unverified80% confidenceDecision RuleTime unknown
竖立稳定性取决于底部是否有扩展式硬质底座（马蒂尔/立式风琴包），普通软身风琴包装文件后重心偏移易倒，需靠书立支撑，桌面竖放选带硬底座款
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80%
Confidence
Long-term
Relevance
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