Last Updated:2025/11/19

(mining) A thin bed of coal mixed with pyrites or carbonate of lime.

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brat

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Source Word

brat

Noun
Japanese Meaning
鉱業用語として、黄鉄鉱や石灰炭酸塩(石灰の炭酸塩)が混じった薄い石炭層を指す。
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