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| 工作面顶板控制采煤工作面中工作空间支护和采空区处理的总称 | |||
| top control: 25 phrases in 11 subjects |
| Artificial intelligence | 1 |
| Automobiles | 6 |
| Aviation | 4 |
| Electronics | 2 |
| Hydroelectric power stations | 2 |
| Information technology | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 2 |
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