insulator
A substance that does not transmit heat (thermal insulator), sound (acoustic insulator) or electricity (electrical insulator).
(rare, proscribed) Alternative spelling of business owner
plural of goutiness
plural of water meadow
屋根裏の新しいグラスウールの層は、冬の熱の損失を防ぐ優れた断熱材として機能します。
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