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What do you mean by one pass and three defenses in a coal mine?
Release time:
2022-11-04
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What do you mean by one pass and three defenses in a coal mine?
- What do you mean by one pass and three defenses in a coal mine?
One pass and three defenses"It refers to the technical management of mine ventilation, gas prevention and control, coal dust prevention and fire fighting in coal mine safety production.
This article reprints the word Internet, if there is infringement, please contact delete.
Key words:
One pass refers to prevention, reprinting, what, coal mine safety, technology, infringement, ventilation
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