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insurance for old-age
释义
保险词汇手册
insurance for old-age
老龄保险,老年保险
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signal hypothesis
signal hypothesis
signal intensity
signal isolation
signal jamming
signal lamp
signal lamp
signal lamp
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signaller
signal level
signal lights
signalling
signalling
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signalman
signal modulation
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signal-noise ratio
signal-noise ratio
signal-noise ratio
signal-noise ratio
signal-noise ratio--signal-noise ratio (SNR)
signal-noise ratio (SNR)
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