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单词 caving
释义 caving
[`kāv·iŋ]
MINING ENGINEERING
A mining procedure, used when the surface is expendable, in which the ore body is undercut and allowed to fall, breaking into small pieces that are recovered by passages (drifts) driven for that purpose; sublevel caving, block caving, and top slicing are examples.
PETROLEUM ENGINEERING
Collapsing of the walls of a wellbore. Also known as sloughing.
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