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理論 りろん空燃 くうねん比 ひでした
rironkūnenhideshita

敬
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Noun
, 
Desu Copula

The polite past form of 理論空燃比

1. The stoichiometric air-fuel ratio was.

Past/Perfective
, 
Polite

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理論空燃比でした

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