arch span

拱跨

English-Chinese dictionary of mining (英汉矿业大词典). 2013.

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  • span — span1 [span] n. [ME spanne < OE sponn, akin to Ger spanne < IE * (s)pen(d) , to pull, draw (> SPIN, Gr span, to pull) < base * spe , to pull, extend] 1. a unit of linear measure equal to nine inches, based on the distance between the… …   English World dictionary

  • Arch — • A structure composed of separate pieces, such as stone or bricks, having the shape of truncated wedges, arranged on a curved line so as to retain their position by mutual pressure Catholic Encyclopedia. Kevin Knight. 2006. Arch     Arch …   Catholic encyclopedia

  • arch — [adj1] principal, superior accomplished, champion, chief, consummate, expert, finished, first, foremost, greatest, head, highest, leading, main, major, master, preeminent, premier, primary, top; concept 574 Ant. inferior arch [adj2] knowing, coy… …   New thesaurus

  • Span — Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence, a… …   The Collaborative International Dictionary of English

  • Span blocks — Span Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence …   The Collaborative International Dictionary of English

  • Span counter — Span Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence …   The Collaborative International Dictionary of English

  • Span iron — Span Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence …   The Collaborative International Dictionary of English

  • Span roof — Span Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence …   The Collaborative International Dictionary of English

  • Span shackle — Span Span, n. [AS. spann; akin to D. span, OHG. spanna, G. spanne, Icel. sp[ o]nn. [root]170. See {Span}, v. t. ] 1. The space from the thumb to the end of the little finger when extended; nine inches; eighth of a fathom. [1913 Webster] 2. Hence …   The Collaborative International Dictionary of English

  • Arch-gravity dam — Arch gravity Hoover Dam Architectural Plans An arch gravity dam, curved gravity dam or arched dam is a dam with the characteristics of both an arch dam and a gravity dam. It is a dam that curves upstream in a narrowing curve that directs most of… …   Wikipedia

  • arch — arch1 [ärch] n. [ME < OFr arche < ML arca < L arcus, arch: see ARC] 1. a curved structure, as of masonry, that supports the weight of material over an open space, as in a bridge, doorway, etc. 2. any similar structure, as a monument 3.… …   English World dictionary

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