fossil shells

 
  • 贝壳化石

fossil shells的用法和样例:

例句

  1. Their fossil shells usually take the form of planispirals, although there were some helically-spiralled and non-spiralled forms (known as "heteromorphs").
    菊石化石外壳呈平旋形,不过也有螺旋上升形和非螺旋形(称为“异形”)。
  2. The coiled, flat, chambered fossil shell of an extinct mollusk belonging to the class Cephalopoda, which was abundant in the Cretaceous period.
    菊石,鹦鹉螺化石已灭绝软体动物的螺旋形、扁平的化石外壳,属头足纲动物,大量存在于中生代
  3. one of the coiled chambered fossil shells of extinct mollusks.
    一种已灭绝的头足类动物的化石脱壳。
  4. It is typified by the presence of multiple cavities that originally housed fossilized shells.
    具有最初由化石化的贝壳而形成的多孔特征。
  5. one of the coiled chambered fossil shells of extinct mollusks
    一种已灭绝的头足类动物的化石脱壳
  6. A tough,silicified limestone formerly used to make millstones. It is typified by the presence of multiple cavities that originally housed fossilized shells.
    一种坚硬的,硅化石灰石,以前用来制作磨石。具有最初由化石化的贝壳而形成的多孔特征。

fossil shells的相关资料:

临近单词

今日热词
目录 附录 查词历史