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| 部分真空度 | |||
| 部分〔未尽，半〕真空 | |||
| 部分真空; 局部真空 | |||
| 未尽真空 | |||
| 不完全真空; 半真空 | |||
| partial vacuum: 8 phrases in 4 subjects |
| Chemistry | 1 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 5 |
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