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单词 θ211953
释义
society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > slow bulging of floor or sagging of roof (3)
thrust1708

Mechanics, etc. A pushing force exerted by one part of a structure, etc. upon another contiguous part: spec. (a) Architecture etc. Such a force…

squeeze1789

Coal Mining. A gradual coming together of the floor and roof of a gallery or working; a place where this has occurred; a creep or nip.

creep1813

Coal Mining. The slow continuous bulging or rising up of the floor of a gallery owing to the superincumbent pressure upon the pillars. ‘Also any…

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更新时间:2024/12/23 13:10:19