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過 か塩素 えんそ酸 さんじゃなかった
kaensosanjanakatta

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Noun
, 
Da Copula

The past negative form of 過塩素酸

1. Wasn't perchloric acid.

Past/Perfective
, 
Negative
, 
Chemistry

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過塩素酸じゃなかった

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