aerological theodolite
... balloon theodolite 测风经纬仪,气球用经... cine theodolite 电影经纬仪 aerological theodolite 高空经纬仪 ...
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RTR高空探测系统保留了无线电经纬仪的优点，增加了测距功能，具有较好的低仰角测风精度。
System of the RTR altitude detection inherits merit of the wireless theodolite , add new function of range finder and have good accuracy of anemography through lower elevation.
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