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exploratory research | |||
pilot studies | |||
exploratory development; pilot study | |||
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exploratory research; exploratory work |
探索研究: 26 phrases in 10 subjects |
Aviation | 3 |
Earth sciences | 4 |
Electronics | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Metallurgy | 2 |
Oil / petroleum | 3 |
Plastics | 1 |
Space | 5 |
Technology | 2 |