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初级注水泥
| 窜槽
| 初级注水泥 | |
| dril. | primary cementing |
| 窜槽 | |
| dril. | breakthrough; channeling; channel up; channel |
| eng.geol. | canalization |
| |||
| primary cementing | |||
| 初级注水泥: 3 phrases in 1 subject |
| Drilling | 3 |
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