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概念确认
| 阶段
| 概念确认 | |
| multimed. | concept validation |
| 阶段 | |
| geol. | estate; region |
| hydroel.st. | phase; stage; step |
| manag. | plane |
| met. | period |
| space | generation |
| sport. | leg |
| |||
| concept validation | |||
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概念确认 : 1 phrase in 1 subject |
| Aviation | 1 |
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