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   English
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to phrases
negative input, positive output
el. 负输人正输出
space 负输入正输出
negative input positive output
avia. 负输人正输出
negative input-positive output
gen. 负输入-正输出〔的〕
geophys. 负输入正输出
negative input positive output: 6 phrases in 5 subjects
Aviation1
Computers1
Earth sciences1
Electronics2
Geophysics1