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| 无横条痕 | |||
| 无横路 | |||
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ring free : 13 phrases in 9 subjects |
| Automobiles | 1 |
| Compressors | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Polymers | 2 |
| Technology | 3 |
| Textile industry | 2 |
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