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标准物质 : 35 phrases in 15 subjects |
Aviation | 1 |
Business | 1 |
Chemistry | 2 |
Commerce | 1 |
Earth sciences | 1 |
Ecology | 2 |
Economy | 3 |
General | 2 |
Management | 1 |
Metallurgy | 1 |
Name of organization | 1 |
Perfume | 1 |
Space | 3 |
Technology | 13 |
Water resources | 2 |