... 测风经纬仪 aerological theodolite 测风气球 pilot balloon 测风气球观测 pilot-balloon observation ...
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... pilot balloon theodolite 测风经纬仪 pilot balloon 导航气球 pilot band filter 导频带通滤波器 ...
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... pilot automatic dead reckoning equipment 自动舵航迹?算仪 pilot balloon 测风向气球 pilot baloon 测风气球 ...
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pilot balloon theodolite 测风经纬仪 ; 测风气球经纬仪
pilot balloon observation 测风气球观测
pilot-balloon plotting board [气象] 测风绘图板
radio pilot balloon 无线电测风气球 ; 无线电控制气球
pilot balloon plotting board 测风气球绘图板
pilot balloon ascent 测风气球施放
pilot balloon station 气球测风站
pilot balloon slide-rule 气球测风计算尺
pilot balloon self-recording theodolite 测风气球自记经纬仪
N a meteorological balloon used to observe air currents 测风气球
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