りんかいぜんかくじっけん
Meanings
Noun
1. subcritical nuclear experiment
Kanji used
face something
realm
in front of
nucleus
real
verification
Composed of
boundary; (nuclear) criticality; critical (mass, pressure, temperature, state, point, etc.)
last (i.e. immediately preceding); previous; pre- (e.g. premodern); before; before; earlier
nuclear (bomb) test