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周波 zhōubō
hydroel.st.	cycle; periodicity
oil	cyclic wave
周波数 zhōubō
gen.	cycle

周波: 181 phrases in 31 subjects

Agriculture	2
Air defense	1
Animal husbandry	1
Aviation	3
Bridge construction	2
Business	6
Commerce	2
Cryptography	1
Desert science	2
Earth sciences	1
Ecology	1
Economy	7
Electric machinery	4
Electronics	7
Engineering geology	4
Explosives and Explosive Ordnance Disposal	2
Finances	2
General	5
Geophysics	4
Hydroelectric power stations	3
Information technology	1
International trade	1
Metallurgy	3
Nautical	5
Nuclear and fusion power	1
Oil / petroleum	10
Remote sensing	1
Space	1
Statistics	8
Technology	89
Telecommunications	1