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单词
leading heading
释义
leading heading
leading heading
[
′lēd·iŋ ′hed·iŋ
]
(mining engineering)
The heading of a pair of parallel headings that is a short distance in front of the other; used to drain a mining area.
A heading dug into the solid coal before the advance of the general face.
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更新时间:2026/7/13 6:29:51