a distribution of pressure over an excavation resembling that in a structural arch, caused by increased pressure on the side walls of the excavation…
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| 单词 | θ211951 |
| 释义 | society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > pressure on side walls as support to roof (1) pressure arch1950 a distribution of pressure over an excavation resembling that in a structural arch, caused by increased pressure on the side walls of the excavation… |
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