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3,4 | dichloro
 dichloro
plast. 二氯
| 1-butene
 1-butene
polym. 1一丁烯

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3/4
Игорь Миг, abbr. three-fourths
3,4: 464 phrases in 34 subjects
Agriculture22
Animal husbandry7
Architecture3
Audio electronics1
Automobiles3
Aviation1
Chemistry116
Computer networks3
Economy1
Electronics4
Environment1
Explosives and Explosive Ordnance Disposal4
Football3
General12
Genetics4
Gymnastics1
Hydroelectric power stations2
Labor law1
Metallurgy6
Nautical1
Perfume168
Pharmacology4
Plastics20
Polymers11
Project management1
Refrigeration2
Reproductive biology2
Rugby football1
Shooting sport1
Steel production1
Technology3
Telecommunications2
Textile industry13
Water resources39