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不透性 : 130 phrases in 26 subjects |
| Agriculture | 5 |
| Animal husbandry | 1 |
| Architecture | 7 |
| Automobiles | 4 |
| Bridge construction | 2 |
| Chemistry | 3 |
| Desert science | 1 |
| Drilling | 2 |
| Ecology | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| General | 12 |
| Hydraulics | 1 |
| Hydroelectric power stations | 7 |
| Information technology | 1 |
| Life sciences | 1 |
| Metallurgy | 12 |
| Oil / petroleum | 5 |
| Plastics | 10 |
| Polymers | 3 |
| Refrigeration | 1 |
| Reproductive biology | 1 |
| Space | 2 |
| Technology | 44 |
| Textile industry | 1 |
| Wind Energy | 1 |
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