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chainwall
释义
chainwall
chainwall
[
′chān ‚wȯl
]
(mining engineering)
A coal mining technique in which the mine roof is supported by coal pillars, between which the coal is mined away.
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英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
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更新时间:2026/6/6 0:57:22