頁けつ岩がん油ゆけつがんゆMeanings1nounshale oilTechnical term for oil extracted from shale rock.頁けつ岩がん油ゆは非ひ在ざい来らい型がた石せき油ゆ資し源げんの一ひとつである。Shale oil is one of the unconventional petroleum resources.
