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滑环 huáhuán
archit.	slip hook
construct.	copper collar
earth.sc.	slip-ring
el.	contact rings; sliding collar
el.mach.	slipping ring; collecting ring
hydroel.st.	slipring
met.	collector ring; slide ring; sliding ring
oil	slid ring
row.	traveler
wind.	slip ring; slip rings
滑环机构 huáhuán
auto.	rubbing block
离合器滑环 huáhuán
auto.	slip ring
发电机滑环 huáhuán
auto.	slip ring
滑动环
mech.eng.	slip ring

滑环: 250 phrases in 32 subjects

Air defense	2
Architecture	1
Automobiles	18
Aviation	1
Chemistry	6
Compressors	11
Computer numerical control	1
Construction	3
Drilling	3
Earth sciences	1
Electric machinery	33
Electronics	11
Explosives and Explosive Ordnance Disposal	1
Finances	1
General	8
Hydroelectric power stations	3
Mechanic engineering	2
Mechanics	1
Metallurgy	14
Mining	2
Mountaineering	1
Nautical	7
Nuclear and fusion power	1
Oil / petroleum	8
Plastics	2
Shipbuilding	2
Space	4
Sports	1
Technology	93
Textile industry	4
Water resources	1
Wind Energy	3