英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Drumlin - Wikipedia
    A drumlin, from the Irish word droimnín ("little ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg [1][2] formed by glacial ice acting on underlying unconsolidated till or ground moraine
  • Drumlin | Glacial Landform, Moraine Eskers | Britannica
    Drumlin, oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till The name is derived from the Gaelic word druim (“rounded hill,” or “mound”) and first appeared in 1833
  • Drumlins - Formation, Characteristics, and Importance of Glacial Landforms
    A drumlin is a smooth, oval-shaped, elongated hill composed mainly of glacial till (a mixture of clay, sand, gravel, and boulders) that forms beneath moving glaciers
  • Drumlins - U. S. National Park Service
    Drumlins are hills of sediment (generally a quarter of a mile or more in length) that have been streamlined by glacier flow Thus, they are often elongated They often occur together in fields, some with as many as several thousand individuals
  • Drumlins | Ice Age National Scientific Reserve | Wisconsin DNR
    Drumlins are elongated hills that form at a glacier's bed and parallel the ice flow direction Wisconsin is home to one of the largest concentrations of drumlins in the world Southern Wisconsin alone has over 5,000 drumlins
  • Drumlins - The University of Sheffield
    Drumlins are oval-shaped hills, largely composed of glacial drift, formed beneath a glacier or ice sheet and aligned in the direction of ice flow There are no strict definitions relating to their size but they tend to be up to a few kilometres long and up to 50m in relief
  • Drumlin: Intro to Geology Study Guide | Fiveable
    A drumlin is a streamlined, elongated hill formed by glacial activity, consisting of compacted till that has been shaped as glaciers move over it These landforms are typically found in clusters and indicate the direction of past ice flow, providing insights into glacial movements and dynamics
  • Drumlin | Definition, Formation Properties - Study. com
    A drumlin is a glacial landform in the shape of a rounded, elongated hill with a smooth surface Typically one end is rounded and the other tapered Drumlins are found in groups or clusters
  • Drumlins - Michigan Technological University
    Drumlins form in clusters apparently near the terminus of glaciers The mechanisms are debated They appear to have important interpretive value for direction and rate of glacial movement
  • Drumlin - Meteorología en Red
    The drumlin is a whale-shaped glacial mound, shaped by the movement of ice during ice ages It is formed from the accumulation of glacial sediments and abrasion erosion It is composed primarily of glacial mud known as till, which includes clay, sand, and gravel





中文字典-英文字典  2005-2009