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单词 churn drill
释义

churn drill


noun

a portable drill rig using a bit fashioned on a massive steel cylinder that is alternately lifted and dropped to drill a hole in earth and rock.

Words nearby churn drill

churidars, churinga, churl, churlish, churn, churn drill, churning, churn molding, churn out, churr, churrasco
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for churn drill

  • This is a mechanical method and one form of apparatus employed is of the churn-drill type common throughout oil and coal regions.

    The Business of Mining|Arthur J. Hoskin
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更新时间:2024/11/11 15:09:35