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| shrinkage hole | |||
| contraction cavity; shrinkage cavity; sink hole; sinking hole | |||
| sinkhole | |||
| shrink hole; tapered hole | |||
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| shrink hole; shrinkage hole | |||
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收 缩 孔 : 20 phrases in 6 subjects |
| Engineering geology | 1 |
| General | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 2 |
| Oil / petroleum | 3 |
| Technology | 10 |
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