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单词
radio hole
释义
radio hole
radio hole
[
′rād·ē·ō ‚hōl
]
(geophysics)
Strong fading of the radio signal at some position in space along an air-to-air or air-to-ground path; the effect is caused by the abnormal refraction of radio waves.
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trdl
trdl-1
trdm
trdma
trdmc
trdmt1
trdn
tr-dna
trdng
trdp
trdpl
trdr
trdrp
trds
trdsu
trdt
trdtc
trdto
trdu
trdy
trdz
tre
tre1
tr/ea
trea
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更新时间:2026/6/3 4:34:08