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单词 laser ceilometer
释义 laser ceilometer
[`lā·zǝr sē`läm·ǝd·ǝr]
ENGINEERING
A ceilometer in which the time taken by a light pulse from a ground laser to travel straight up to a cloud ceiling and be reflected to a receiving photomultiplier is measured and converted into a cathode-ray display that indicates cloud-base height.
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