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象限 xiàngxiàn
dril.	bearing; sector
hydroel.st.	quad; quarter
met.	quad (仪)
mil., air.def.	quadrants
tech.	quadrant; quadrant; triangular space
象限四分之一圆周 xiàngxiàn
cryptogr.	quadrant

象限: 220 phrases in 32 subjects

Agriculture	3
Air defense	2
Architecture	6
Aviation	6
Business	1
Compressors	1
Earth sciences	2
Economy	1
Electric machinery	4
Electronics	11
Explosives and Explosive Ordnance Disposal	1
General	22
Genetics	1
Geology	1
Geophysics	10
Hydroelectric power stations	5
Information technology	2
International trade	1
Latin	3
Mathematics	3
Metallurgy	4
Nautical	5
Nuclear and fusion power	1
Nursing	2
Oil / petroleum	11
Otorhinolaryngology	2
Plastic surgery	2
Securities	2
Space	17
Statistics	3
Technology	80
Wind Energy	5