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单词 roadheading
释义

Definition of roadheading in English:

roadheading

noun
Mining
  • The process of excavating a rock face in a mine, with either hand tools or mechanical cutting equipment.

Origin

1960s; earliest use found in New Scientist.

Definition of roadheading in US English:

roadheading

noun
Mining
  • The process of excavating a rock face in a mine, with either hand tools or mechanical cutting equipment.

Origin

1960s; earliest use found in New Scientist.

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