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倍频滤波器
geophys.
octave filter set
tech.
octave filter
倍频
带
滤波器
tech.
octave-band filter
倍频滤波器
:
11 phrases
in 7 subjects
Air defense
1
Electronics
3
Geophysics
2
Metallurgy
1
Space
2
Technology
1
Telecommunications
1
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