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| core barrel | |||
| coring tool (Yeldar Azanbayev) | |||
| core drill bit | |||
| core drill | |||
| core bit | |||
| coring bit | |||
| hollow bit; hollow drill bit; rotary core bit; core bit (полое долото для вырезания цельных кусков породы) | |||
| core drill bit | |||
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| core barrel | |||
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| core bit | |||
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колонковое долото : 64 צירופים, 8 נושאים |
| בְּנִיָה | 1 |
| הִתעַמְלוּת | 1 |
| טֶכנוֹלוֹגִיָה | 5 |
| כְּרִיָה | 2 |
| מקרוב | 1 |
| נפט וגז | 14 |
| נפט/נפט | 37 |
| שדות שמן | 3 |