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ペルオキソ二 に硫酸 りゅうさんだった
peruokisoniryūsandatta

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Noun
, 
Da Copula

The past form of ペルオキソ二硫酸

1. Was peroxodisulfuric acid.

Past/Perfective
, 
Chemistry

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ペルオキソ二硫酸だった

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