浮力 ふりょく調整 ちょうせい装置 そうちじゃないです
furyokuchō seiso uchijanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 浮力調整装置

1. It's not a buoyancy control device.; It's not a buoyancy adjustment device.

Negative
Polite
Casual Register