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agric. 正比计数管
geophys. 正比计数器
med. 正比〔比例〕计数器
nucl.phys. 正比计数管
nucl.pow. 比计数管
space 比例计数器
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: 27 phrases in 9 subjects
Earth sciences1
Electronics8
Geophysics1
Metallurgy1
Nuclear and fusion power2
Nuclear physics3
Oil / petroleum2
Space4
Technology5