fire retardants
plural of fire retardant
(intransitive) To spin around; to gyrate, to whirl. / (transitive, rare) To make (something) spin or whirl around; to spin, to whirl.
plural of amebiasis
plural of membrana
工業化学者たちは、どの配合が環境に害を及ぼさずに最も優れた保護効果を発揮するかを判断するため、いくつかの難燃剤を試験した。
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