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Kotomora

ロックウール

also: ロック・ウール

ロ
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ク
ウ
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ル
Common word

Meanings

1

noun

rock wool; mineral wool

A fibrous insulation material made from molten rock or slag. Used in construction and horticulture. The Japanese term 岩綿 (がんめん) is a synonym.

See also: 岩綿 (がんめん)