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| 阶段发育 | |||
| phase development: 33 phrases in 13 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 4 |
| Business | 2 |
| Consulting | 1 |
| Economy | 2 |
| Electronics | 8 |
| Engineering geology | 1 |
| General | 1 |
| Oil / petroleum | 3 |
| Space | 1 |
| Technology | 7 |
| United Nations | 1 |
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