[KongchangAI]
Unverified80% confidenceFactTime unknown

天然浮石密度极低(约0.25-0.6 g/cm³)可浮于水面,这是鉴别真伪天然浮石的简易方法;沉水或过重的多为合成或掺杂材料

1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen

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