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单词
shaft column
释义
shaft column
shaft column
[
′shaft ‚käl·əm
]
(mining engineering)
A length of pipes installed in a mine shaft for pumping, for hydraulic stowing, or for compressed air.
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in 2
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in 7th heaven
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inaa
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in a bad light
in a bad mood
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in a bad way
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in a big way
inabilities
inability
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更新时间:2024/11/12 8:46:34