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单词 rock dusting
释义

Definition of rock dusting in English:

rock dusting

noun ˈrɒk ˌdʌstɪŋ
North American Mining
  • The spreading of pulverized rock in a coal mine in order to reduce the risk of coal-dust explosions.

Origin

Early 20th century. From rock dust + -ing. Compare slightly later rock dust.

Definition of rock dusting in US English:

rock dusting

nounˈrɒk ˌdʌstɪŋ
North American Mining
  • The spreading of pulverized rock in a coal mine in order to reduce the risk of coal-dust explosions.

Origin

Early 20th century. From rock dust + -ing. Compare slightly later rock dust.

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更新时间:2025/6/19 4:30:46