Unverified80% confidenceTradeoffTime unknown
长柄免弯腰设计与整体轻便性存在矛盾：长杆越长力臂越大操作越费力，全金属长杆稳固但重，铝合金或塑料杆轻便但摆动时晃动感强
1
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80%
Confidence
Long-term
Relevance
-
First Seen
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