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凹形 āoxíng
sport. concavity
tech. saucer shape; suck; concave upward
凹形
: 319 phrases in 39 subjects
Agriculture5
Air defense2
Animal husbandry2
Architecture11
Art1
Automobiles17
Aviation2
Biology1
Bridge construction7
Construction1
Dermatology2
Desert science6
Drilling5
Earth sciences1
Electric machinery1
Electronics9
Engineering geology7
Explosives and Explosive Ordnance Disposal1
General33
Golf3
Hydroelectric power stations1
Ichthyology5
Measuring instruments1
Metallurgy13
Nautical1
Oil / petroleum10
Outdoor activities and extreme sports1
Plastics1
Polygraphy1
Rowing1
Shipbuilding2
Slang1
Space1
Sports1
Surgery1
Technology149
Telecommunications1
Textile industry10
Wind Energy1