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| spacing ratio (两灯间的距离对其至工作面距离之比) | |||
| spacing ratio | |||
| air space ratio | |||
| spacing ratio (两灯间的距离对其工作面距离之比) | |||
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空 间比 : 14 phrases in 6 subjects |
| Electronics | 2 |
| Information technology | 1 |
| Multimedia | 1 |
| Nursing | 1 |
| Space | 4 |
| Technology | 5 |
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