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层界
agric. boundary of horizon
busin. stratum boundary
层 界: 541 phrases in 42 subjects
Agriculture8
Architecture1
Artificial intelligence1
Automobiles1
Aviation52
Biotechnology2
Bridge construction6
Business2
Chemistry5
Compressors2
Desert science5
Drilling4
Earth sciences43
Electronics16
Engineering geology19
Environment3
Explosives and Explosive Ordnance Disposal1
Forestry1
General3
Geology9
Geophysics7
Hydraulics3
Hydroelectric power stations11
Information technology1
Metallurgy22
Mining1
Nanotechnology1
Nautical4
Nursing2
Oil / petroleum28
Plastics4
Polymers3
Rail transport7
Refrigeration1
Semiconductors1
Space24
Technology125
Telecommunications2
Textile industry1
United Nations2
Water resources3
Wind Energy104