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| leveling bubble | |||
| level bubble; levelling bubble; level vial | |||
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水 准 气泡 : 51 phrases in 11 subjects |
| Agriculture | 2 |
| Architecture | 2 |
| Automobiles | 1 |
| Construction | 1 |
| Electric machinery | 1 |
| Engineering geology | 1 |
| General | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 3 |
| Technology | 37 |
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