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gyration    音标拼音: [dʒɑɪr'eʃən]
n. 旋回,回转,旋转

旋回,回转,旋转

gyration
n 1: a single complete turn (axial or orbital); "the plane made
three rotations before it crashed"; "the revolution of the
earth about the sun takes one year" [synonym: {rotation},
{revolution}, {gyration}]
2: the act of rotating in a circle or spiral [synonym: {gyration},
{whirling}]

Gyration \Gy*ra"tion\ (j[-i]*r[=a]"sh[u^]n), n.
1. The act of turning or whirling, as around a fixed center;
a circular or spiral motion; motion about an axis;
rotation; revolution.
[1913 Webster]

The gyrations of an ascending balloon. --De Quincey.
[1913 Webster]

If a burning coal be nimbly moved round in a circle,
with gyrations continually repeated, the whole
circle will appear like fire. --Sir I.
Newton.
[1913 Webster]

2. (Zool.) One of the whorls of a spiral univalve shell.
[1913 Webster]

{Center of gyration}. (Mech.) See under {Center}.

{Radius of gyration}, the distance between the axis of a
rotating body and its center of gyration. --Rankine.
[1913 Webster]


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  • NPS. gov Homepage (U. S. National Park Service)
    Discover America's stories Plan your visit and explore the diverse landscapes, national parks, and cultural treasures managed by the National Park Service
  • Find a Park (U. S. National Park Service)
    Find a national park by selecting from a list or choosing a state on the map
  • Interagency Senior Annual and Senior Lifetime Passes (U. S. National . . .
    The America the Beautiful – The National Parks and Federal Recreational Lands Pass Series offers a lifetime and annual Senior Pass option Find more information about all options for entrance passes or learn more about the Senior Passes below
  • Maps (U. S. National Park Service)
    Find maps to help plan your trip to a national park and learn more about how the National Park Service makes maps
  • Work for Us (U. S. National Park Service)
    Experience Your America by joining the National Park Service! The National Park Service preserves the natural and cultural resources and values of the National Park System for the enjoyment, education, and inspiration of this and future generations You can make a difference by bringing your unique experience, background, and perspective to our work Opportunities for All We offer
  • Yellowstone National Park (U. S. National Park Service)
    I just donated to the National Park Foundation When you donate to the National Park Foundation your gift will help protect the over 400 national parks that preserve more than 84 million acres of the world's most treasured landscapes, ecosystems, and historical sites
  • California - U. S. National Park Service
    California National Historic Trail California Various States CA,CO,ID,KS,MO,NE,NV,OR,UT,WY Follow in the footsteps of over 250,000 emigrants who traveled to the gold fields and rich farmlands of California during the 1840s and 1850s: the greatest mass migration in American history The California National Historic Trail is over 5,000 miles long and covers portions of 10 states Step into
  • Florida - U. S. National Park Service
    National Park Biscayne Miami, Key Biscayne Homestead, FL Within sight of Miami, yet worlds away, Biscayne protects a rare combination of aquamarine waters, emerald islands, and fish-bejeweled coral reefs Evidence of 10,000 years of human history is here too; from prehistoric tribes to shipwrecks, and pineapple farmers to presidents For many, the park is a boating, fishing, and diving
  • Sequoia Kings Canyon National Parks (U. S. National Park Service)
    I just donated to the National Park Foundation When you donate to the National Park Foundation your gift will help protect the over 400 national parks that preserve more than 84 million acres of the world's most treasured landscapes, ecosystems, and historical sites
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    The National Park Service strives to connect people to the opportunities and adventures throughout the watershed Inspiring stewardship across this vast region supports recreation, business, tourism, learning, and a thriving natural resource for all to enjoy





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