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to phrases
research and development test
avia.
研究与发展试验
busin.
研制试验
plast.
研究和开发试验
space
研制性试验
research and development test
:
24 phrases
in 8 subjects
Aviation
3
Business
3
Earth sciences
4
Economy
1
Electronics
1
General
2
Information technology
2
Space
8
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