 |
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| cascade control; subdivision control; subdivision controlling | |||
| piggyback control | |||
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| "piggy-back cascade control | |||
| "piggy-back " control | |||
| piggyback control | |||
| 分段 控制: 11 phrases in 6 subjects |
| Earth sciences | 1 |
| General | 1 |
| Information technology | 2 |
| Space | 4 |
| Technology | 2 |
| Wind Energy | 1 |