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单词
gamma-ray altimeter
释义
gamma-ray altimeter
gamma-ray altimeter
[
′gam·ə ‚rā al′tim·əd·ər
]
(engineering)
An altimeter, used at altitudes under several hundred feet, that measures the photon backscatter from the earth resulting from the transmission of photons to earth from a cobalt-60 gamma source in the plane.
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更新时间:2025/9/21 1:56:43