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中频 | |
avia. | mean frequency |
earth.sc. | intermediate frequency |
IT | medium frequency |
radio | intermediate frequency |
space | mean frequency; medium frequency |
sport. | intermediate frequency; intermediate frequency |
tech. | intermediate frequency; mid-range frequency |
全向信标 | |
space | non-directional beacon |
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medium-frequency; mid-frequency | |||
mean frequency | |||
IF | |||
medium frequency | |||
medium frequencyMF | |||
intermediate frequency | |||
mean frequency (300 千赫 ~ 3 兆赫); medium frequency (300 〜3000 千赫) | |||
intermediate frequency; mid-range frequency | |||
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midband | |||
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intermediate frequency | |||
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intermediate frequency (IF) | |||
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intermediate frequency | |||
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medium frequency | |||
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resting frequency | |||
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intermediate frequency | |||
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medium frequency in electroheat |
中频 : 414 phrases in 35 subjects |