Unverified70% confidenceDecision RuleTime unknown
地板刷刷毛应选深浅两种密度混排（外圈软长毛聚拢污水、内圈硬短毛去污），单一密度要么刮不净要么去污弱
1
Sources
70%
Confidence
Long-term
Relevance
-
First Seen
Sources
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