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转环 zhuǎnhuán
angl.	swivel
el.mach.	runner (collar)
tech.	pivot bracket; revolving ring; rotary swivel; runner collar; runner plate; slack puller; thrust bearing runner
自由转环 zhuǎnhuán
gen.	swivel

转环: 349 phrases in 52 subjects

Agriculture	6
Air defense	4
Anatomy	1
Astronomy	1
Automobiles	25
Aviation	5
Bridge card game	1
Bridge construction	7
Business	3
Chemistry	3
Commerce	1
Compressors	1
Computer networks	1
Computer numerical control	1
Construction	2
Cryptography	1
Dancing	3
Drilling	4
Earth sciences	3
Ecology	1
Economy	3
Electric machinery	15
Electronics	22
Engineering geology	6
Environment	2
Exhibitions	1
Finances	2
General	11
Genetics	5
Geophysics	1
Gymnastics	10
Hydroelectric power stations	14
Information technology	2
International Monetary Fund	3
Mathematics	2
Mechanics	2
Metallurgy	10
Molecular genetics	1
Nautical	4
Navigation	1
Oil / petroleum	3
Plastics	1
Refrigeration	2
Securities	4
Shipbuilding	3
Space	5
Technology	120
Telecommunications	4
Textile industry	5
United Nations	5
Water resources	3
Wind Energy	3