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单词
cover hole
释义
cover hole
cover hole
[
′kəv·ər ‚hōl
]
(mining engineering)
One of a group of boreholes drilled in advance of mine workings to probe for and detect water-bearing fissures or structures.
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a prodigal son
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a professional conference call
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aprofh
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a programming language
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更新时间:2025/9/18 6:50:08