单词 | rock drilling |
释义 | Definition of rock drilling in English:rock drillingnoun
OriginMid 19th century; earliest use found in The Cultivator: a monthly journal for farm and the garden. Definition of rock drilling in US English:rock drillingnoun
OriginMid 19th century; earliest use found in The Cultivator: a monthly journal for farm and the garden. |
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