Mining. (See quots.)
| 单词 | θ75187 |
| 释义 | the world > matter > gas > air > fresh air > [noun] > supplying fresh air or ventilation > ventilator > passage, shaft, duct, or pipe > division of ventilating current in mine (2) skail1860 Mining. (See quots.) split1883 Mining. A division of a ventilating air current. |
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