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冲
孔
标记
chem.
punch mark
冲
孔
用冲子作
标记
auto.
punch mark
冲标记
tech.
punch mark
冲 标记:
33 phrases
in 10 subjects
Agriculture
1
Air defense
2
Animal husbandry
1
Electronics
3
General
2
Genetics
5
Life sciences
1
Metallurgy
3
Technology
14
Telecommunications
1
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