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每英寸磅 : 47 phrases in 12 subjects |
| Agriculture | 1 |
| Automobiles | 4 |
| Aviation | 2 |
| Bridge construction | 1 |
| Drilling | 2 |
| Earth sciences | 1 |
| General | 1 |
| Mining | 2 |
| Oil / petroleum | 13 |
| Plastics | 6 |
| Project management | 1 |
| Technology | 13 |
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