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摩擦阻力系数
avia.
friction drag coefficient
wind.
coefficient of frictional resistance
摩擦阻力系数
与井巷或管道壁面粗糙程度和空气密度有关的系数
expl.
coefficient of frictional resistance
摩擦阻力 系 数
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1 phrase
in 1 subject
Nautical
1
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