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周期 zhōuqī
math.	período
stat.	ciclo
数据周期 zhōuqī
IMF.	periodicidade dos dados

周期: 82 phrases in 16 subjects

Automatic control	1
Cables and cable production	2
Ecology	3
Electric machinery	2
Electricity generation	1
Electronics	2
Environment	5
International Monetary Fund	30
Mathematics	15
Nuclear physics	4
Patents	2
Power system protection	1
Reliability	6
Statistics	4
Ultrasound	3
Welding	1