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4,4'-氧双
chem. 4,4'-oxydi-2-butanol (2-丁醇)
发泡剂4, 4’-氧双苯磺酰肼
chem. 4,4'-oxybis benzene sulfonyl hydrazide
氧双: 476 phrases in 28 subjects
Agriculture28
Animal husbandry9
Automobiles1
Aviation1
Chemistry65
Dermatology2
Earth sciences3
Ecology1
Electronics92
Explosives and Explosive Ordnance Disposal1
Food service and catering3
General30
Genetics14
Geology1
Geophysics1
Information technology3
Life sciences1
Metallurgy29
Molecular genetics11
Oil / petroleum3
Pharmacology94
Plastics28
Polymers10
Reproductive biology1
Space7
Technology20
Textile industry1
Water resources16