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| centralizer | |||
| centering guide | |||
| centering apparatus; plumbing fork | |||
| 定心器: 35 phrases in 11 subjects |
| Automobiles | 6 |
| Aviation | 4 |
| Electronics | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 4 |
| Metallurgy | 3 |
| Mining | 1 |
| Oil / petroleum | 3 |
| Shipbuilding | 1 |
| Sports | 1 |
| Technology | 8 |
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