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| polyA addition signal | |||
| poly A addition signal | |||
| 加 A 信 号: 56 phrases in 17 subjects |
| Advertising | 1 |
| Air defense | 1 |
| Automobiles | 2 |
| Aviation | 4 |
| Bridge card game | 1 |
| Chemistry | 1 |
| Electronics | 10 |
| General | 2 |
| Genetics | 2 |
| Metallurgy | 2 |
| Multimedia | 1 |
| Nursing | 1 |
| Rowing | 1 |
| Shipbuilding | 2 |
| Space | 9 |
| Technology | 12 |
| Telecommunications | 4 |
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