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| main tower; pylon | |||
| central tower; main column | |||
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| king-tower | |||
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| king-tower | |||
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| king tower | |||
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| king tower | |||
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主塔 : 33 phrases in 8 subjects |
| Architecture | 1 |
| Bridge construction | 2 |
| General | 2 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Polymers | 1 |
| Project management | 1 |
| Technology | 23 |
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