G21J   1/00  \	0	0	2G081	G21J   1/00	4	ȯ	Nuclear explosive devices
G21J   3/00  \	0	0	2G081	G21J   3/00	9	ȯ֤ʿ	Peaceful applications of nuclear explosive devices
G21J   3/02  \	1	1	2G081	G21J   3/02	0	귡	for excavation
G21J   5/00  \	0	0	2G081	G21J   5/00	9	ȯõ	Detection arrangements for nuclear explosions
