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line switching
IT	线路交换［转接］
met.	线路转接; 线路交换
tech.	线路开关
line switch
el.	线路交换; 接线器
tech.	寻线机; 预选器; 线路开关; 自动电话选线机
telecom.	用户线接线器; 寻线器

line switching: 81 phrases in 18 subjects

Air defense	1
Communications	1
Construction	3
Dermatology	1
Electric machinery	3
Electronics	21
General	1
Information technology	3
Management	2
Metallurgy	2
Multimedia	1
Project management	1
Rail transport	1
Space	6
Technology	28
Telecommunications	3
Textile industry	2
Wind Energy	1