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chemical decontamination stresses
ecol.	химическая дезактивация
environ.	химическая дезактивация (Removal of chemical substances from a building, a watercourse, a person's clothes, etc.; Удаление химических веществ из помещения, водного потока, личной одежды и пр.)
Makarov.	химическая дезактивация и очистка; химическая очистка
med.	дегазация
chemical warfare decontamination
mil.	дегазация

chemical decontamination: 53 phrases in 9 subjects

American usage, not spelling	1
Electronics	1
Energy industry	7
General	2
Makarov	1
Military	4
Nuclear and fusion power	6
Technology	3
Weapons of mass destruction	28