| |||
primary data | |||
main data | |||
general data | |||
critical data | |||
key data; major data; principal data; salient date |
主要数据 : 20 phrases in 13 subjects |
Air defense | 1 |
Automobiles | 1 |
Aviation | 4 |
Business | 1 |
Computers | 1 |
Desert science | 1 |
General | 1 |
Management | 1 |
Metallurgy | 1 |
Plastics | 1 |
Project management | 3 |
Securities | 1 |
Technology | 3 |