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合成氨 héchéng’ān
compr. synthetic ammonia
tech. synthetical ammonia
合成 氨: 123 phrases in 18 subjects
Agriculture28
Animal husbandry8
Chemistry15
Compressors4
Dermatology3
Earth sciences1
Explosives and Explosive Ordnance Disposal1
General3
Genetics22
Metallurgy1
Nursing2
Oil / petroleum9
Plastics1
Reproductive biology1
Sports2
Technology14
Textile industry7
United Nations1

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