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| 垂直性，度; 正交性 | |||
| 垂直 (性); 直立 | |||
| 垂直性度，状态 | |||
| 垂直度 | |||
| 垂直性; 正交性 | |||
| 垂直 (性，度); 正交 | |||
| 垂直状态; 垂直 | |||
| perpendicularity: 5 phrases in 3 subjects |
| Automobiles | 1 |
| Oil / petroleum | 2 |
| Technology | 2 |
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