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to phrases
前级真空
gen.
forvacuum
;
preevacuate
agric.
forevacuum
el.
fore vacuum
met.
backing space
;
primary vacuum
tech.
backing vacuum
;
fore-vacuum
前 级真空
:
38 phrases
in 6 subjects
Aviation
3
Business
1
Construction
3
Oil / petroleum
1
Space
2
Technology
28
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