| 释义 |
floating bridge
[f. floating ppl. a.]
In various applications (see quots.).
1706Phillips (ed. Kersey), Floating-bridge, a Bridge made in form of a Work in Fortification call'd a Redoubt, consisting of Two Boats cover'd with Planks. 1727–41Chambers Cycl., Flying or Floating-Bridge, is ordinarily made of two small bridges, laid one over the other, in such a manner, as that the uppermost stretches and runs out, by the help of certain cords running through pullies placed along the sides of the under-bridge. 1842G. W. Francis Dict. Arts, etc., Floating Bridge, a collection of beams of timber, of sufficient buoyancy to sustain itself on the surface of a river, and reaching across it. 1858Simmonds Dict. Trade, Floating-bridge, a flat-bottomed ferry steam⁓boat in harbours or rivers, running on chains laid across the bottom, and constructed for the conveyance of passengers, goods, and vehicles. 1867Smyth Sailor's Word-bk., Floating-bridge, a passage formed across a river or creek by means of bridges of boats. 1889Century Dict. s.v. Bridge, Floating-bridge, a part of a bridge, supported by a caisson or pontoon, which can swing into and away from the line of roadway. |