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光 ひかり触媒 しょくばい作用 さようでした
hikarishokuba isayōdeshita

敬
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Noun
, 
Desu Copula

The polite past form of 光触媒作用

1. Photocatalytic effect was.

Past/Perfective
, 
Polite

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光触媒作用でした

光触媒作用でした【ひかりしょくばいさようでした】 Activity

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