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| 两排刻度 | |||
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| 双刻度 | |||
| 二重刻度尺; 二重标度 | |||
| double scales: 9 phrases in 6 subjects |
| Air defense | 1 |
| Business | 1 |
| Electronics | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 3 |
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