noun
underground nuclear test
Refers to a nuclear weapons test conducted below the earth's surface. Often used in political, military, and environmental contexts.
See also: 大気圏内核実験
その国は地下核実験を行ったと発表した。
That country announced that it had conducted an underground nuclear test.
地下核実験の禁止を求める声が高まっている。
Calls for a ban on underground nuclear testing are growing.