ちょう精密 せいみつ加工 かこうじゃなかったです
chōseimitsu kakōja nakattadesu

Noun
Desu Copula

The polite, past negative form of 超精密加工

1. Wasn't ultra-precision machining.; Wasn't highly precise processing.

Past/Perfective
Negative
Polite
Casual Register