| 单词 | catenary |
| 例句 | Weiss You feel that softness and also feel the path bounded by the bridge’s catenary cables — the path feels like the nave of a Gothic cathedral. Brooklyn Bridge, Star of the City: Here’s a Tour 2020-05-06T04:00:00Z When Washington Dulles International Airport opened in Northern Virginia in 1962, the soaring design of its main terminal, a minimalist structure with a suspended catenary roof, was seen as a bold reflection of American aviation. Eero Saarinen’s Michigan 2017-10-06T04:00:00Z Those trusses, exposed and painted gray as is much of the hall, support catenary skylights, like inverted nets or inflated glass balloons, aerial feats of sculptural engineering and parametric design. Moynihan Train Hall: It’s Stunning. And, a First Step. 2021-01-11T05:00:00Z In late works from 2019, a skeleton holds an oversize skull over his groin, and in other works, based on a string draped into a catenary curve, the repetition of the motif creates a veil. Review | Seeing Jasper Johns: Blockbuster exhibition reveals a brilliant but bleak legacy 2021-09-29T04:00:00Z Its catenary arch is the same used in the dome of St. Paul’s Cathedral in London and was the inspiration for the Gateway Arch in St. Louis. Explorer: Skiing Igloo-to-Igloo Across the Grand Tetons 2011-03-04T19:55:00Z In paintings of the catenary wires and structures along the tracks near Union Station, the industrial landscape is rendered realistically, but the vertical towers and flat planes of color hint at abstraction. Galleries: ‘Alive and Present, ‘Enduring’ Walking through the attic, with its many catenary arches, seems like walking through the rib cage of a whale. Getting to Know Gaudí in Barcelona, From Park to Palace 2017-07-12T04:00:00Z Liberty filed a $3 million claim last fall based on inefficiency installing catenary poles. Contractor blames red tape for Tacoma light-rail project delay 2023-04-22T04:00:00Z The first time the Russians damaged the tracks; the second time, the tracks and catenary wires. Ukraine’s 15,000-Mile Lifeline 2022-11-15T05:00:00Z Contractors will replace overhead catenary wires that supply power to the trains. Seattle traffic watch: Light-rail disruptions and more I-5 roadwork 2022-11-10T05:00:00Z Figure 2.84 A hyperbolic cosine function forms the shape of a catenary. Calculus, Vol 2 2016-03-30T00:00:00Z If a cable of uniform density is suspended between two supports without any load other than its own weight, the cable forms a curve called a catenary. Calculus, Volume 1 2016-03-30T00:00:00Z Design changes in the past year helped address the incompatibility with the corridor’s track and its catenary system — the overhead wires that supply the train with electricity. Amtrak’s faster, higher-tech Acela trains are delayed again 2022-04-13T04:00:00Z “It hit the catenary wire that runs between the 3 towers,” Parsons wrote in a tweet from the EGS Twitter account. NASA delays dress rehearsal of new megarocket 2022-04-03T04:00:00Z Officials say outside of major projects, the corridor also needs to address basic infrastructure needs, such as improvements to track, signal systems and electric catenary systems that are beyond their useful lives. The infrastructure package puts $66 billion into rail. It could power the biggest expansion in Amtrak’s 50-year history. 2021-11-08T05:00:00Z And then there’s also the basic infrastructure: the track, signal systems, electric catenary systems that also are beyond their useful life in many cases. A commission has a $117 billion plan to modernize the Northeast Corridor. Here’s how it improves passenger rail. 2021-09-09T04:00:00Z High-voltage power lines, chains hanging between two posts, and strands of a spider’s web all form catenaries. Calculus, Volume 1 2016-03-30T00:00:00Z Inside the cab, the transition was barely perceptible as Mr. Schmieder deployed the pantograph that connects to the overhead cables, a so-called catenary system. What if Highways Were Electric? Germany Is Testing the Idea. 2021-08-03T04:00:00Z They form a catenary arch, the curve assumed by a cord hanging freely from two points, recalling Jasper Johns’ paintings of 2005. Review: Dianna Molzan’s art plays some clever tricks on you 2019-03-28T04:00:00Z The masterful catenary paintings, still under-sung in Johns’ copious repertoire, are a powerful conclusion to a blissful show. Does the Broad's new Jasper Johns exhibition hit the bull's-eye? It gets darn close 2018-02-09T05:00:00Z Replacement of track infrastructure, and the electric catenary poles and wires and the signal systems, is work that goes on every year. A commission has a $117 billion plan to modernize the Northeast Corridor. Here’s how it improves passenger rail. 2021-09-09T04:00:00Z Hyperbolic functions can be used to model catenaries. Calculus, Volume 1 2016-03-30T00:00:00Z That is another advantage of the catenary system: The eHighway could eliminate the need for charging stops, important in the trucking industry where time is money. What if Highways Were Electric? Germany Is Testing the Idea. 2021-08-03T04:00:00Z The tunnels, used by Amtrak and New Jersey Transit, suffered repeated power outages last week as ice formed on the catenary wires that provide power to trains. Did Trump Kill the Plan for a Hudson Rail Tunnel? Its Backers Hope Not 2018-01-02T05:00:00Z “Using wound paper tubes, a common building material with unique sonic properties, and interlocking them to form a catenary dome, we create a hive for these activities.” The National Building Museum’s summer installation will feature hives. Yes, hives. 2017-04-18T04:00:00Z The utility structure, for instance, looks more like a support truss for catenary wires out on a rail line. Nordic Food Court Rises at Grand Central, With an Order to Leave No Trace 2016-04-06T04:00:00Z Figure 6.84 A hyperbolic cosine function forms the shape of a catenary. Calculus, Volume 1 2016-03-30T00:00:00Z With his left hand, he slid forward a red-handled lever — the master controller — to send a surge of electricity from the catenary system to the traction motors that gripped the rails. The Wreck of Amtrak 188 2016-01-26T05:00:00Z A catenary arch is the shape that is made when a chain hangs freely from two supported ends. The Science That Made the Gateway Arch Stand 2015-10-28T04:00:00Z A catenary is a chain that supports its own weight. Missouri's Gateway Arch monument built on rigged votes, protests 2015-10-24T04:00:00Z Goldfinches fly to and from a feeder in looping catenaries. Hummingbirds are beautiful, but their personalities are for the birds 2015-09-21T04:00:00Z Find the ratio of the area under the catenary to its arc length. Calculus, Volume 1 2016-03-30T00:00:00Z The catenary system provides electrical power, but it has its flaws. New York Today: A High-Wire Act 2015-07-23T04:00:00Z Mr. Zoli, a native of the Adirondacks, explained that Squibb Park Bridge was built with lightweight materials of back locust and catenary steel cables, which form an “inverted suspension system.” Slow Rebound for a Bridge in Brooklyn Whose Bounce Became Worse 2015-05-03T04:00:00Z On Tuesday morning, a crew of four regulars and three trainees boarded a dingy, diesel-powered “catenary maintenance vehicle” beneath Pennsylvania Station and set out in search of icicles. Taking Aim at Icicles to Keep Trains Moving Into and Out of New York 2015-02-25T05:00:00Z Approximately 10 tonnes of copper are required for every kilometer of dual-track catenary system. A Closer Look at the Chinese High Speed Rail Juggernaut: The Chinese closer to Elon Musk's Hyperloop than the US (Part 2) 2014-08-04T04:00:00Z Find the slope of the catenary at the left fence post. Calculus, Volume 1 2016-03-30T00:00:00Z An Amtrak spokesman pointed to a report that says many local catenary lines and the electrical substations that serve them need improvement as they have “deteriorated, undermining the reliability of the system.” New York Today: A High-Wire Act 2015-07-23T04:00:00Z Power to the catenary wires were shut down during the repairs. Light rail stations to reopen after repairs 2014-06-26T04:00:00Z When ice forms on or above the wires, it can play havoc with the catenary system, tripping circuit breakers and leaving trains powerless on the tracks. Taking Aim at Icicles to Keep Trains Moving Into and Out of New York 2015-02-25T05:00:00Z The dams were defended by searchlights, guns, and things called catenary defences - which was basically a metal curtain to stop planes being able to run in and bomb them. Britain's 'explosive' beauty spots 2013-06-30T23:25:38Z The most common physical applications of hyperbolic functions are calculations involving catenaries. Calculus, Volume 1 2016-03-30T00:00:00Z The catenary curves are not the only mathematical shapes hiding in plain sight at MoMath. Please Play with Your Math: New Museum Opens in New York City 2012-12-19T17:45:00.307Z The surprising thing is that this surface is a curve called a catenary, which is also the shape of a drooping chain. Museum Review: Museum of Mathematics at Madison Square Park 2012-12-13T23:04:22Z Those wires are part of the catenary system from which the trains draw the electricity that powers their engines. Taking Aim at Icicles to Keep Trains Moving Into and Out of New York 2015-02-25T05:00:00Z Power is often still carried on lines that hang in graceful catenaries of various depths from poles that lean left or right randomly but rarely stand straight. Today's Economist: Uwe E. Reinhardt: The Mid-20th Century Infrastructure of the U.S. 2012-11-16T11:00:59Z It was a well and evenly twisted rope, about two inches in diameter; and after stretching it as taut as it could be drawn, it hung in a moderate catenary curve. The Falls of Niagara and Other Famous Cataracts 2011-03-26T02:00:15.717Z Inverted, catenary curves are used as load-bearing arches because they distribute weight evenly. Please Play with Your Math: New Museum Opens in New York City 2012-12-19T17:45:00.307Z The overhead catenary wire which streches all the way from New York to Philadelphia is continually going down for one reason or another. City Room: Christie Kills Train Tunnel, Again 2010-10-27T15:33:00Z The simple catenary is shown in the figure. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5 "Cat" to "Celt" The only surface of revolution having this property is the catenoid formed by the revolution of a catenary about its directrix. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" I presume that you saw that it was a catenary curve?” Astounding Stories of Super-Science, March 1930 There were tall buildings, but their walls were draping, catenary curves. Long Ago, Far Away The real problems with Amtrak and NJ Transit – and I mean the problems that cause most delays – are the overhead catenary wire, which provides electricity to the trains, and doors getting stuck. City Room: Christie Kills Train Tunnel, Again 2010-10-27T15:33:00Z If steel be placed in this manner, the catenary curve will be practically approximated, the steel will be fairly developed throughout its length of embedment, and the structure will be proof against cracking. Some Mooted Questions in Reinforced Concrete Design American Society of Civil Engineers, Transactions, Paper No. 1169, Volume LXX, Dec. 1910 Now let us consider the surfaces of revolution formed by this system of catenaries revolving about the directrix of the two catenaries of equal tension. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" I have not yet had time to engage in it; but I find that the conclusions of his demonstrations are, that every part of the catenary is in perfect equilibrium. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 2 Not at all: the catenary appears actually every time that weight and flexibility act in concert. The Life of the Spider To this catenary the trolley wire was suspended by hangers at short intervals. Tom Swift and His Electric Locomotive, or, Two Miles a Minute on the Rails In his advocacy of placing steel to simulate a catenary curve, with end anchorage, the author is more nearly correct than in other issues he makes. Some Mooted Questions in Reinforced Concrete Design American Society of Civil Engineers, Transactions, Paper No. 1169, Volume LXX, Dec. 1910 The radius of curvature of a catenary is equal and opposite to the portion of the normal intercepted by the directrix of the catenary. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" You hesitate between the catenary and portion of a circle. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 2 Hence the tangents at A and B to the upper catenary must intersect above the directrix, and the tangents at A and B to the lower catenary must intersect below the directrix. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" To eliminate any possibility of the trolley wire breaking, a strong steel cable, called a catenary, was slung just above the trolley wire. Tom Swift and His Electric Locomotive, or, Two Miles a Minute on the Rails The condition of stability of a catenoid is therefore that the tangents at the extremities of its generating catenary must intersect before they reach the directrix. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Every catenary lying between them has its directrix higher, and every catenary lying beyond them has its directrix lower than that of the two catenaries. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" But I would rather propose, that you make your middle rail an exact catenary, and the interior and exterior rails parallels to that. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 2 The catenaries which lie beyond the two generate surfaces whose radius of curvature convex towards the axis in the meridian plane is greater than the radius of concave curvature. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" There must be two attached alternately to the catenary cable. Tom Swift and His Electric Locomotive, or, Two Miles a Minute on the Rails It is true, they will not be exact catenaries, but they will depart very little from it; much less than portions of circles will. Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson, Volume 2 This catenoid, however, is in stable equilibrium only when the portion considered is such that the tangents to the catenary at its extremities intersect before they reach the directrix. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" |
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