かく分裂 ぶんれつ物質 ぶっしつではありません
kakubunretsubusshitsudewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 核分裂物質

1. Not a nuclear material.; It is not a fissile material.

Negative
Polite
Formal Register
Physics