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drawbridge    音标拼音: [dr'ɔbr,ɪdʒ]
n. 可开闭的吊桥

可开闭的吊桥

drawbridge
n 1: a bridge that can be raised to block passage or to allow
boats or ships to pass beneath it [synonym: {drawbridge}, {lift
bridge}]

Drawbridge \Draw"bridge`\, n.
A bridge of which either the whole or a part is made to be
raised up, let down, or drawn or turned aside, to admit or
hinder communication at pleasure, as before the gate of a
town or castle, or over a navigable river or canal.
[1913 Webster]

Note: The movable portion, or draw, is called, specifically,
a bascule, balance, or lifting bridge, a turning,
swivel, or swing bridge, or a rolling bridge, according
as it turns on a hinge vertically, or on a pivot
horizontally, or is pushed on rollers.
[1913 Webster]

81 Moby Thesaurus words for "drawbridge":
Bifrost, abatis, advanced work, balistraria, bank, banquette,
barbed-wire entanglement, barbican, barricade, barrier, bartizan,
bascule bridge, bastion, bateau bridge, battlement, breastwork,
bridge, bulwark, cantilever bridge, casemate, catwalk,
cheval-de-frise, circumvallation, contravallation, counterscarp,
curtain, demibastion, dike, earthwork, enclosure, entanglement,
escarp, escarpment, fence, fieldwork, floating bridge, flyover,
footbridge, fortalice, fortification, gangboard, gangplank,
gangway, glacis, lift bridge, loophole, lunette, machicolation,
mantelet, merlon, mound, outwork, overbridge, overcrossing,
overpass, palisade, parados, parapet, pontoon bridge, portcullis,
postern gate, rampart, ravelin, redan, redoubt, rope bridge,
sally port, scarp, sconce, span, stepping-stone, stepstone,
stockade, suspension bridge, swing bridge, tenaille, toll bridge,
vallation, vallum, viaduct, work


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  • How were drawbridges and portcullises used tactically?
    How were drawbridges and portcullises used tactically? I was recently asked why medieval castles would have both a drawbridge and a portcullis After giving an explanation, I realized that it was j
  • High Quality SOLUTION A uniform drawbridge must be held at a 37 . . . - Chegg
    Question: A uniform drawbridge must be held at a 37∘ angle above the horizontal to allow ships to pass underneath The drawbridge weighs 45,000 N and is 14 0 m long A cable is connected 3 5 m from the hinge where the bridge pivots (measured along the bridge) and pulls horizontally on the bridge to hold it in place Part AWhat is the tension in the cable?Express
  • Solved Suppose the weight of the drawbridge in the figure is - Chegg
    Suppose the weight of the drawbridge in the figure is supported entirely by its hinges and the opposite shore, so that its cables are slack The mass of the bridge is 2 5 0 0 kg
  • Where is (or was) the biggest medieval drawbridge?
    The purpose of the drawbridge was to deny access to the castle gate As such, spanning large distances was not usually necessary, at least by the drawbridge itself The still-operational drawbridges at Helmingham Hall are a good example: The drawbridge construction itself: So the drawbridge only reaches out 2 75m (9ft) although the moat was 18m (~60ft) wide
  • Solved Friction Force on a Dancer on a Drawbridge A dancer - Chegg
    Friction Force on a Dancer on a Drawbridge A dancer is standing on one leg on a drawbridge that is about to open The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are, and the respectively
  • Solved Suppose the weight of the drawbridge in the figure - Chegg
    Question: Suppose the weight of the drawbridge in the figure below is supported entirely by its hinges and the opposite shore, so that its cables are slack (b) What is the magnitude in newtons and direction of the force the hinges exert on the bridge under these circumstances? The mass of the bridge is 2,625 kg
  • suppose the weight of the drawbridge in the figure is - Chegg
     suppose the weight of the drawbridge in the figure is supported entirely by its hinges and the opposite shore, so that its acables are slack the mass of the bridge is 2 5 0 0 kg what percent of the weight is supported by the opposite shore if the point of support is at the very end of the drawbridge This question hasn't been solved yet!
  • Solved 1 -12. 0 m Sir Lancelot rides slowly out of the castle - Chegg
    Question: 1 -12 0 m Sir Lancelot rides slowly out of the castle at Camelot and onto the 12 0-m-long drawbridge that passes over the moat (Fig P11 46) Unbeknownst to him, his enemies have partially severed the vertical cable holding up the front end of the bridge so that it will break under a tension of 5 80* 103 N
  • Solved Problem 6: Suppose the weight of the drawhridge in - Chegg
    Science Physics Physics questions and answers Problem 6: Suppose the weight of the drawhridge in the figure is supported entirely by its hinges and the opposite shore, so that its cables are slack The mass of the bridge is 2500 kg Part (a) What percent of the weight is supported by the opposite shore if the point of support is at the very end of the drawbridge? Numeric : A numeric value is
  • Solved Lets say we are in a castle where the only entrance - Chegg
    Question: Let's say we are in a castle where the only entrance is a drawbridge across the moat that surrounds the castle There are currently two levers that control the state of the drawbridge There is an inner lever and an outer lever The levers can be in two states, either pulled or not pulled Furthermore, the bridge can be in two states, either up or down





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