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氧化二氮
tech.	nitrous oxide
_氧化二氮
chem.	dental gas

氧化二氮: 59 phrases in 18 subjects

Agriculture	5
Animal husbandry	1
Automobiles	4
Aviation	3
Chemistry	4
Ecology	3
Electronics	4
Engineering geology	1
Environment	2
Explosives and Explosive Ordnance Disposal	1
Food industry	1
General	2
Oil / petroleum	1
Space	5
Technology	11
Textile industry	1
United Nations	9
Water resources	1