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to phrases
工艺孔
gōngyì kǒng
gen.
pierce
avia.
auxiliary hole
railw.
fabrication hole
印制电路板上的
工艺孔
gōngyì kǒng
tech.
fabrication holes
工艺 孔
:
5 phrases
in 3 subjects
Engineering geology
1
Shipbuilding
1
Technology
3
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