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power protection
el.mach.	功率保护; 功率保护装置
tech.	功率保护装置

power protection: 47 phrases in 14 subjects

Agriculture	3
Air defense	1
Aviation	2
Computer networks	1
Electric machinery	2
Electronics	11
Hydroelectric power stations	7
International trade	1
Mathematics	1
Metallurgy	1
Space	1
Technology	13
Telecommunications	2
Textile industry	1