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ヘキサフルオロケイ酸 けいさんだった
hekisafuruorokeisandatta

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Noun
, 
Da Copula

The past form of ヘキサフルオロケイ酸

1. Was hexafluorosilicic acid.

Past/Perfective
, 
Chemistry

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ヘキサフルオロケイ酸だった

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