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| ★ 控制指标 | |||
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control index : 18 phrases in 13 subjects |
| Accounting | 1 |
| Angling hobby | 1 |
| Aviation | 1 |
| Construction | 1 |
| Dentistry | 1 |
| Drilling | 2 |
| Earth sciences | 1 |
| Environment | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Technology | 4 |