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单词
double-entry method
释义
double-entry method
double-entry method
[
¦dəb·əl ′en·trē ‚meth·əd
]
(mining engineering)
A mining arrangement involving twin entries in flat or gently dipping coal, so that rooms can be extended from both entryways.
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更新时间:2025/4/3 9:21:38