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| 导孔; 中导孔; 标志孔; 控制孔; 主导穿孔; 控制孔主导穿孔 | |||
| 控制穿孔; 导孔 (на перфоленте) | |||
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| 标志孔穿孔带上的 | |||
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ведущая перфорация : 5 phrases in 2 subjects |
| General | 2 |
| Information technology | 3 |
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