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to phrases
研究阶段
yánjiū jiēduàn
tech.
research stage
;
study phase
研究阶段
:
21 phrases
in 11 subjects
Bridge construction
1
Business
1
Commerce
3
Economy
1
General
4
Hydroelectric power stations
2
Metallurgy
1
Project management
1
Space
3
Technology
3
United Nations
1
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