核かく分ぶん裂れつ物ぶっ質しつ

Meanings

1

fissionable material

Technical term in nuclear physics for materials capable of sustaining a nuclear fission chain reaction, such as uranium-235 or plutonium-239.

核かく分ぶん裂れつ物ぶっ質しつの管かん理りは国こく際さい的てきに厳きびしく規き制せいされている。
The management of fissionable materials is strictly regulated internationally.