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单词
firedamp drainage
释义
firedamp drainage
firedamp drainage
[
′fīr‚damp ‚drān·ij
]
(mining engineering)
The collection of firedamp from coal strata, generally into pipes, with or without the use of suction. Also known as methane drainage.
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moxa treatment
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更新时间:2025/11/10 0:13:37