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质心 : 248 phrases in 46 subjects |
| Agriculture | 12 |
| Air defense | 2 |
| Animal husbandry | 3 |
| Artificial intelligence | 1 |
| Astronomy | 3 |
| Athletics | 1 |
| Automobiles | 6 |
| Aviation | 14 |
| Bridge construction | 9 |
| British usage, not spelling | 1 |
| Business | 1 |
| Chemistry | 4 |
| China | 1 |
| Company name | 1 |
| Computers | 1 |
| Desert science | 1 |
| Earth sciences | 7 |
| Economics | 4 |
| Electronics | 10 |
| Energy industry | 1 |
| Ethnology | 1 |
| Food industry | 1 |
| General | 11 |
| Genetics | 1 |
| Geology | 6 |
| Gymnastics | 1 |
| Hydroelectric power stations | 8 |
| Life sciences | 3 |
| Mechanics | 1 |
| Metallurgy | 4 |
| Mining | 3 |
| Name of organization | 5 |
| Navigation | 1 |
| Nursing | 2 |
| Oil / petroleum | 1 |
| Pharmacology | 2 |
| Physics | 1 |
| Reproductive biology | 1 |
| Space | 27 |
| Sports | 9 |
| Surgery | 1 |
| Technology | 66 |
| Textile industry | 4 |
| United States | 1 |
| Water supply | 1 |
| Wind Energy | 3 |