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| spacing of rivets; rivet pitch | |||
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铆距 : 48 phrases in 9 subjects |
| Architecture | 1 |
| Automobiles | 2 |
| Bridge construction | 10 |
| Construction | 1 |
| Drilling | 1 |
| General | 3 |
| Metallurgy | 1 |
| Nautical | 2 |
| Technology | 27 |
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