core drill

Thân thiện

A geologist uses a core drill to extract a sample from a rock formation.

Definition

1. Noun:
   • A drill that removes a cylindrical core from the drill hole: A "core drill" is a specialized drilling tool designed not just to create a hole, but to extract a solid, cylindrical sample of the material being drilled through. This sample, called a core, is preserved for analysis.

Usage

• A "core drill" is used in fields like geology, mining, construction, and engineering to obtain intact samples of subsurface materials (e.g., rock, soil, concrete) for examination and testing.
• It is a compound noun. The term "core" specifies the type of sample extracted, and "drill" specifies the tool.

Examples

• Noun:
  • The geologists used a core drill to obtain samples from the bedrock.
  • Before constructing the bridge, engineers performed core drill tests on the concrete pillars to assess their strength.

Advanced Usage

• "to take a core drill": This phrase is sometimes used informally to mean the action of using a core drill to extract a sample.
  • The team needed to take a core drill of the foundation.

Variants and Related Words

• Core drilling (n): The process or activity of using a core drill.
  • Core drilling is essential for mineral exploration.
• Core sample (n): The cylindrical piece of material extracted by a core drill.
  • The core sample revealed layers of sedimentary rock.
• Core barrel (n): The part of a core drill that holds the extracted core.
  • They removed the core barrel to retrieve the sample.

Synonyms

• Boring tool (general): A tool for making holes.
• Sampling drill: A drill designed to collect samples (this is a descriptive synonym, not a single common word).

Notes

• "Core drill" is a specific technical term. In casual conversation, people might simply refer to "drilling for samples." The compound term itself is not typically broken into phrasal verbs or idioms.

Học thuật

Noun

1. a drill that removes a cylindrical core from the drill hole