| 单词 |
multiple-entry system |
| 释义 |
multiple-entry system multiple-entry system[′məl·tə·pəl ′en·trē ‚sis·təm] (mining engineering) A system of access or development openings generally in bituminous coal mines involving more than one pair of parallel entries, one for haulage and fresh-air intake and the other for return air. |
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