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NR数 エヌ•アールすう
tech. 噪声评价值; 噪声评价数; 噪声级数
: 1219 phrases in 26 subjects
Accumulators6
Automatic control59
Electric machinery3
Electricity generation5
Electrochemistry5
Electronics53
International Monetary Fund16
Isolation5
Magnetics1
Mathematics62
Metrology13
Microsoft9
Nuclear physics31
Patents2
Physics56
Piezoelectric crystals45
Power electronics4
Power system protection1
Radio2
Reliability3
Semiconductors15
Superconductivity3
Technology806
Thermal Energy11
Video recording2
Welding1