observation systems
| simulation experiment
| observation system abbr. | |
| space | 观测系统 |
| simulation experiment abbr. | |
| avia. | 模拟试验 |
| eng.geol. | 模拟实验 |
| |||
| 观测系统 | |||
| 监测系统 | |||
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observation systems : 109 phrases in 21 subjects |