Unverified88% confidenceDecision RuleTime unknown
旋转书架的旋转轴承分滚珠转盘和塑料轴心两种，滚珠转盘（钢珠直径≥3mm）承重可达30kg以上且旋转平顺，塑料轴心长期负重易卡顿变形，装满书首选滚珠转盘结构
1
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88%
Confidence
Long-term
Relevance
-
First Seen
Sources
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