tetrad

英

美

网络  四分体; 四联球菌; 四联体; 四分子; 四分孢子

复数：tetrads　

计算机

英英释义

noun

• the cardinal number that is the sum of three and one
  Synonym:four4IVquaternquaternionquaternaryquaternityquartetquadrupletfoursomeLittle Joe

双语例句

• Microspore mother cells meiosis was conformed to simultaneous type with mostly tetrahedral and decussate tetrad.
  小孢子母细胞减数分裂属于同时型，小孢子在四分体中的排列方式多数为四面体形，少数为十字交叉形。
• The Huangshan A-type granites with tetrad REE: constraints on Mesozoic lithospheric thinning of the southeastern Yangtze craton?
  高度演化的黄山A型花岗岩：对扬子克拉通东南部中生代岩石圈减薄的约束？
• Microspore abortion occured after the tetrad formation.
  小孢子败育发生在四分体形成以后。
• The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.
  四分孢子的显著特征是细胞核和高尔基体呈活跃状态。
• Callose exists mainly in transverse walls during dyad, triad and tetrad stages, a little in side walls.
  二分体、三分体、四分体时期，胼胝质荧光主要存在于大孢子之间的横壁上，侧壁内胼胝质荧光较弱。
• Pollen abortion of MS-4 was in the single nucleus pollen grain stage after the division of microspore tetrad.
  MS-4花粉败育的时期，是在小孢子四分体分开至单核花粉粒时期。
• It appears however that the formation of megaspore tetrad associated with the high GA3/ ZT ratio.
  高水平的ZT/IAA有利于大孢子母细胞和花粉粒的形成，而大孢子四分体的形成则需要高的GA3/ZT比值。
• The process of pollen abortion begins with vacuole formation and gradual enlargement in the tetrad.
  花粉败育的过程从四分体开始，细胞质内液泡逐渐增大，接着细胞器解体，细胞核解体。
• The megaspore mother cell undergoing meiotic divisions produces a T-shaped, or, rarely, linear tetrad.
  大孢子母细胞减数分裂产生T形四分体和少数线形四分体。
• Tapetum cell hyperplasia from the tetrad to the single nucleus early period.
  绒毡层细胞在四分体&单核早期发生增生；