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| feedback technique | |||
| back-to-back method; feedback method; loading back method | |||
| 反馈法: 21 phrases in 10 subjects |
| Air defense | 1 |
| Business | 2 |
| Electric machinery | 2 |
| Electronics | 8 |
| Heavy equipment vehicles | 1 |
| Information technology | 2 |
| Management | 1 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 1 |
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