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| |||
| gross sectional area; total sectional area | |||
| gross cross-sectional area | |||
| 总 截面面积: 13 phrases in 6 subjects |
| Automobiles | 1 |
| Bridge construction | 3 |
| Drilling | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 2 |
| Technology | 2 |
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