boron trioxide
present participle and gerund of ensure
plural of advance man
plural of systematism
(inorganic chemistry) A white solid, of empirical formula B₂O₃, that is an inorganic polymer, and is used in making glass and enamel and for synthesizing other boron compounds.
技術者はエナメルの品質を一定に保つために、バッチに三酸化二ホウ素(B2O3)を慎重に計量して加えた。
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