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ammonium [ə'məʊniəm, ə'moʊ-] n
gen.	铵〔根〕; 铵基
agric.	铵 (基，NH+ +)
archit.	铵 (NH₄)
chem.	铵离子
el.	钱基
met.	铵基 (NH4)
plast.	钱 (NH₄⁺,NH₃R⁺,NH₂R₂⁺， NHR₃⁺,NR₄⁺)
space	氨
tech.	铵基; 桜
UN, chem.	铵
ammonium radical [ə'məʊniəm, ə'moʊ-] n
chem.	铵根
ammonium The radical NH4+, NH4 [ə'məʊniəm, ə'moʊ-] n
environ.	铵 (NH4+基)

ammonium : 1250 phrases in 47 subjects

Agriculture	69
Animal husbandry	6
Architecture	5
Automobiles	2
Aviation	3
Biochemistry	1
Business	2
Chemistry	523
Coal	2
Dermatology	3
Desert science	6
Earth sciences	19
Ecology	6
Electric machinery	1
Electronics	40
Energy industry	1
Explosives and Explosive Ordnance Disposal	58
Food industry	11
Food service and catering	10
Foreign trade	3
Forestry	2
General	16
Hydroelectric power stations	3
Information technology	1
Leather	15
Light industries	1
Metallurgy	94
Mining	3
Nautical	2
Nursing	1
Oil / petroleum	47
Oil processing plants	1
Pediatrics	1
Perfume	5
Pharmacology	43
Plastics	14
Polymers	14
Public security	1
Reproductive biology	4
Scientific	1
Semiconductors	1
Space	13
Surgery	2
Technology	147
Textile industry	8
United Nations	7
Water resources	32