差動 さどう位相 いそう偏移 へんい変調 へんちょうではありません
sadōisōhen'ihenchōdewa arimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 差動位相偏移変調

1. It is not differential phase shift keying.

Negative
Polite
Formal Register
Computing