圧力 あつりょく調整 ちょうせい じゃなかったです
atsuryokuchōseikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 圧力調整器

1. Wasn't a pressure regulator.; Wasn't the pressure regulator.

Past/Perfective
Negative
Polite
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