Unverified72% confidenceFactTime unknown
旋转款的中轴材质决定顺畅度和寿命：金属轴+尼龙/钢珠垫圈的转动最稳，纯塑料轴长期承重后易变形卡死，选购时可查看中轴是否为金属结构
1
Sources
72%
Confidence
Long-term
Relevance
-
First Seen
Sources
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