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γ 射线测量计
met. gamma-ray gauge (测量厚度、密度等)
γ射线测量计
met. gamma-ray gauge
а射线测量计
el. alpha meter
β射线测量计
met. beta ray gauge
射线测量计: 3 phrases in 3 subjects
Geophysics1
Metallurgy1
Textile industry1