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| drillstring | |
| dril. | columna de perforación |
| compensator | |
| gen. | compensador |
| industr. construct. | chapa compensadora |
| ophtalm. | corneal |
| opt. | diafragma variable |
| tech. | autotransformador; corrector |
| |||
| columna de perforación | |||
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drillstring : 1 phrase in 1 subject |
| Drilling | 1 |