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元素单元
dril.
element
元素单元:
33 phrases
in 15 subjects
Agriculture
3
Architecture
1
Aviation
1
Business
3
Chemistry
2
Construction
1
General
5
Information technology
1
Metallurgy
1
Oil / petroleum
4
Project management
1
Semiconductors
1
Space
1
Technology
7
Telecommunications
1
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