butanones
(geology) A heavy, dark igneous rock consisting mostly of pyroxene minerals with smaller amounts of olivine and hornblende.
plural of Rubik's cubist
plural of 'Obby 'Oss
plural of butanone
研究室では、蒸発を防ぐためにいくつかのメチルエチルケトン類を密閉容器に保管した。
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