Unverified80% confidenceTradeoffTime unknown
低重心+金属笔尖/笔身的活动铅笔书写更稳更精准，制图和长时间书写优选；全塑料笔身轻但书写稳定性差、易疲劳感不同
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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