Rotary Drilling Method - Hardrockdrills.com
Locuciones verbales drill | drilling: Inglés: Español: drill down vi phrasal phrasal verb, intransitive: Verb with adverb(s) or preposition(s), having special meaning and not taking direct object--for example, 'make up' [=reconcile]: 'After they fought, they made up.' (bore a hole) perforar⇒ vtr verbo transitivo: Verbo que requiere de un objeto directo ('di la verdad', 'encontré una moneda').
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