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protective device
auto.	安全设备
avia.	防护措施
CNC	安全装置
cycl.	防护装置
dermat.	防护性装置
met.	保护装置
space	防护装备
sport.	保护性装置
tech.	防护设备
telecom.	保护设备

protective device: 62 phrases in 17 subjects

Agriculture	2
Automobiles	1
Aviation	2
Chemistry	1
Electric machinery	5
Electricity generation	1
Electronics	7
Hydroelectric power stations	5
Information technology	3
Metallurgy	1
Nautical	7
Oil / petroleum	1
Rail transport	2
Shipbuilding	2
Space	3
Technology	18
Wind Energy	1