modified design
| seismic coefficient method
| modified design | |
| avia. | 改变标准设计 |
| seismic coefficient method | |
| bridg.constr. од. | 地震系数法 |
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| 改变标准设计 | |||
| 修正的设计 | |||
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modified design : 5 phrases in 3 subjects |
| Bridge construction | 2 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Sealing | 1 |