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signal m
rem.sens. 信号
UN 脉冲
signal: 46 phrases in 14 subjects
Acoustics2
Automatic control12
Company name1
Electric machinery1
Electronics5
Fishery fishing industry4
Forestry2
Health care1
International Monetary Fund1
Piezoelectric crystals3
Power system protection8
Remote sensing2
Semiconductors2
United Nations2