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| 格构杆; 桁架杆 | |||
| 格式柱 | |||
| 花格式桅杆【核】 | |||
| 桁架桅 | |||
| 格构柱 | |||
| 笼形桅 | |||
| 格子桅; 格构抱杆; 网架式铁塔; 格构桅柱 | |||
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lattice mast : 6 phrases in 2 subjects |
| Oil / petroleum | 1 |
| Technology | 5 |
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