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| 大气密度计 | |||
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| 比重计 | |||
| 密度计 | |||
| 密度测定器 | |||
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density gauges : 20 phrases in 10 subjects |
| Aviation | 1 |
| Desert science | 1 |
| Drilling | 1 |
| Engineering geology | 1 |
| Mechanics | 1 |
| Metallurgy | 1 |
| Nuclear physics | 3 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 7 |
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