[KongchangAI]
Unverified85% confidenceTradeoffTime unknown

钢珠导轨滑动更顺滑且承重高但成本高,滚轮式导轨便宜但承重低、久用易异响;重物和高频使用选钢珠,轻型储物或临时用选滚轮

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85%
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