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せきたんそう
Meanings
Noun
1. coal bed
Alt. forms
石
せき
炭
たん
層
そう
せきたんそう
Composed of
せき
counter for jewels in a watch; counter for transistors, diodes, etc. in an electronic product
たんそう
coal seam; coal bed
Composed of
せきたん
coal
そう
layer; stratum; class; stratum; sheaf; counter for stories (of a building)