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to phrases
positive input-negative output
avia. 正输人-负输出
comp. 正输入-负输出〔的〕
earth.sc. 正输入-负输出
geophys. 正输入一负输出
positive input negative output
el. 正输人负输出
positive input-negative output: 7 phrases in 5 subjects
Aviation1
Electronics2
General1
Geophysics2
Space1

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