 |
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| common bias, single control | |||
| individual control | |||
| independent control; single control | |||
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| individual control | |||
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| individual control | |||
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| independent control | |||
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单独控制 : 6 phrases in 6 subjects |
| Computer networks | 1 |
| Electronics | 1 |
| Hydroelectric power stations | 1 |
| Mathematics | 1 |
| Oil / petroleum | 1 |
| Racing and motorsport | 1 |
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