 |
| |||
| 空间比 (两灯间的距离对其至工作面距离之比) | |||
| 空间比; 间隔比 | |||
| 井距比 | |||
| 空间比 (两灯间的距离对其工作面距离之比); 间距比 (率) | |||
| 间距; 间距比 | |||
|
spacing ratio : 12 phrases in 5 subjects |
| Desert science | 1 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Superconductivity | 1 |
| Technology | 5 |
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