ectoderm

音標發(fā)音

• 英式音標 [?ek.t?.d??m]
• 美式音標 [?ek.t?.d??m]
• 英式發(fā)音
• 美式發(fā)音

基本解釋

• n.外胚層

同根派生

• ectoderm相關詞

英漢例句

• Any of the blastomeres from which the ectoderm develops.
  外裂球任一種發(fā)育成外胚層的裂球
• An inward fold on the surface of the embryonic ectoderm that develops into part of the anal passage.
  原肛肛道胚胎消化道表面的凹陷，發(fā)育成直腸的一部分
• Derived from two embryonic germ layers, the ectoderm and the endoderm. Used of lower invertebrates, such as sponges and coelenterates.
  雙胚層的具有兩個胚層（外胚層和內(nèi)胚層）的。用于低等無脊椎動物，如寄生蟲和腔腸動物
• The resulting gastrula consists of an outer ectoderm, an inner endoderm, and a mesoderm layer positioned between them.
  最終原腸胚由一個外腸胚，內(nèi)腸胚，和一個中腸胚構成。
• The primitie mouth, or stomodeum, is a slight depression on the surface of the ectoderm.
  原始的口（或口凹）是外胚層表面的一個輕微的凹陷。

• ectoderm更多例句

英英字典

劍橋英英字典

• the cells in the embryo of a human or animal that develop into skin, hair, and the nervous system

• ectoderm劍橋字典
• ectoderm柯林斯字典