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双聚焦
 双聚焦
met. double focusing
 | 系统
 DPA系统
pest.contr. DPA System
 F系统
rem.sens. F system
 PELV系统
el.mach. PELV system
 SELV系统
el.mach. SELV system
 TN 系统
IT TN system
 TN-C 系统
IT TN-C system
 TN-C-S 系统
IT TN-C-S system
 TN-S 系统
IT TN-S system
 系统
tech. system

to phrases
双聚焦
met. double focusing
双聚焦: 41 phrases in 12 subjects
Agriculture1
Artificial intelligence1
Aviation1
Chemistry3
Electronics5
Geophysics8
Information technology1
Metallurgy2
Oil / petroleum2
Optics branch of physics1
Space1
Technology15

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