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switching    音标拼音: [sw'ɪtʃɪŋ]
切换,交换

切换,交换

switching
电路交换


switching
讯息交换


switching
分封交换


switching
交换理论


switching
交换


switching
交换时间


switching
束射交换管

switching
交换 切换 开关

switching
n 1: the act of changing one thing or position for another; "his
switch on abortion cost him the election" [synonym: {switch},
{switching}, {shift}]

Switch \Switch\, v. t. [imp. & p. p. {Switched}; p. pr. & vb. n.
{Switching}.]
1. To strike with a switch or small flexible rod; to whip.
--Chapman.
[1913 Webster]

2. To swing or whisk; as, to switch a cane.
[1913 Webster]

3. To trim, as, a hedge. [Prov. Eng.] --Halliwell.
[1913 Webster]

4. To turn from one railway track to another; to transfer by
a switch; -- generally with off, from, etc.; as, to switch
off a train; to switch a car from one track to another.
[1913 Webster]

5. (Eccl.) To shift to another circuit.
[1913 Webster]


Switching \Switch"ing\,
a. & n. from {Switch}, v.
[1913 Webster]

{Switching engine}, a locomotive for switching cars from one
track to another, and making up trains; -- called also
{switch engine}. [U.S.]
[1913 Webster]


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  • Columbia Glacier Retreating | Geophysical Institute
    Columbia Glacier, located about 40 kilometers (25 miles) west of Valdez near the epicenter of the great 1964 earthquake, is rapidly losing its battle for survival It is the last of Alaska's 52 tidewater glaciers to begin its epic retreat from the sea Granted, Alaska still has plenty of glaciers left, but the tidewater glaciers--those that empty directly into the sea--are on a drastic decline
  • The Columbia Glacier | Geophysical Institute
    The Columbia Glacier is one of Alaska's better known tidewater glaciers, both from the standpoint of tourist attraction and the model it provides for scientific investigation In 1973 it became the object of close scientific scrutiny In Alaska, some 50 to 60 glaciers calve into the sea, but exhibit such diversified behavior that they have baffled glaciologists for decades For instance, some
  • Alaska Glaciers Show Dramatic Melting - Geophysical Institute
    Columbia Glacier in Prince William Sound and Bering Glacier in the St Elias Mountains are two glaciers losing ice at an alarming rate: during the past decade, Columbia has shrunk by an average of about 21 feet per year along the length of the glacier; Bering has lost more than 9 feet per year
  • Seismic record analysis can reveal a glacier’s past | Geophysical Institute
    The team analyzed 20 years of Columbia Glacier’s seismic activity to learn what these signals can reveal about changes in the glacier and the conditions that drive them The glacier has been retreating since the early 1980s after approximately 200 years of stability The findings were published March 22 in Geophysical Research Letters
  • The Alaska-Canada Boundary | Geophysical Institute
    The Alaska-Canada boundary was originally established in February 1825 by Russia (then owner of Alaska) and Great Britain (then owner of Canada)
  • The Shuttle Red Aurora | Geophysical Institute
    By glowing red on Sunday night, April 12, 1981, the heavens over the United States displayed their pleasure with the successful flight of the shuttle Columbia Perhaps because Columbia was up that night, more Americans than usual looked up at the sky and saw the red aurora that covered much of the nation, even as far south as Texas
  • Alaska climate report: February marked by cold and dynamic weather . . .
    At the same time, a ridge of high pressure built northward over British Columbia and the Alaska Panhandle, setting up a pattern that steered warmer air from the south into much of mainland Alaska As a result, temperatures climbed above average across much of mainland Alaska early in the month, although the Arctic Coast remained cold
  • The majesty and mystery of Alaska yellow cedar | Geophysical Institute
    These trees, which can live longer than 1,000 years, grow on the rainy coast from the Oregon California border through British Columbia and as far north as Prince William Sound The giants have in many areas died in large numbers, puzzling scientists who later came up with a non-intuitive theory of what killed them
  • The Unknown Legacy of Alaskas Atomic Tests | Geophysical Institute
    The big daddy came in 1971 Project Cannikin was a 5-megaton explosion that inspired the formation of the group Greenpeace, a group of environmentalists from British Columbia who joined together to oppose the test But Greenpeace and many others-including Alaska senator Mike Gravel and Congressman Nick Begich-were not able to prevent Cannikin
  • Ranking Rivers | Geophysical Institute
    For comparison, that's right ahead of the Columbia in area drained and right after it in discharge (The Columbia River also needs Canada to gain its rank; its source is in British Columbia ) Two Yukon tributaries also make the list The Porcupine ranks 20th in drainage area, and the Tanana is number 16 for average discharge





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