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| 试升力气球〔观测〕 (observation); 【气】测风气球〔观测〕 (observation) | |||
| 领航气球; 测风气球 | |||
| 测风球 | |||
| 气象气球 | |||
| 导向气球; 导航气球; 测风 (气球) | |||
| 测风气球 | |||
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pilot balloon : 15 phrases in 7 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Desert science | 2 |
| Earth sciences | 1 |
| General | 2 |
| Space | 2 |
| Technology | 5 |
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