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| полое сверло; пустотелое сверло; кольцевое сверло; полый бурав (取木料心材供检查用); сверло для кольцевого сверления; сверло-коронка | |||
| 空心钻: 9 phrases in 4 subjects |
| Construction | 2 |
| Electronics | 3 |
| General | 1 |
| Technology | 3 |
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