a small balloon used for signalling, to test the wind direction, or (now usually) to carry instruments to record or transmit data about the…
| 单词 | θ8648 |
| 释义 | the world > the earth > weather and the atmosphere > weather > study or science of weather > meteorological instruments > [noun] > upper air wind instruments (2) pilot balloon1802 a small balloon used for signalling, to test the wind direction, or (now usually) to carry instruments to record or transmit data about the… rawin1967 A measurement of atmospheric wind speed and direction made by tracking a balloon-borne target with radar; (also) the balloon-borne radar target… |
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