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| 原型样品试验 | |||
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| 试制产品试验; 试制舰船试航 | |||
| 试样试验; 样机试验 | |||
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| 释放前试验 | |||
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испытание опытных образцов : 6 phrases in 3 subjects |
| Aviation | 1 |
| General | 1 |
| Technology | 4 |
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