Unverified72% confidenceFactTime unknown
轨迹球侧重人造红宝石支撑点的机型（如Kensington、部分ELECOM）比金属/塑料轴承转动更顺滑、寿命更长；可自行更换陶瓷/氧化锆滚珠进一步降低摩擦，是资深用户的常见改造
1
Sources
72%
Confidence
Long-term
Relevance
-
First Seen
Sources
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