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過 か塩素 えんそ酸 さんでした
kaensosandeshita

敬
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Noun
, 
Desu Copula

The polite past form of 過塩素酸

1. It was chloric acid.; It was perchloric acid.

Past/Perfective
, 
Polite
, 
Chemistry

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過塩素酸でした

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