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

• 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。
• At both tetrad and pollen mother cell stages, the amount of polysaccharides in pollen cells of male sterility line was slightly higher than that of its maintainer lines.
  在花粉母细胞和四分体时期，不育系细胞中多糖物质的含量稍高于保持系细胞中的含量，但它们之间差异不显著。
• 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。
• The results are as follows: During anther early development, only few ATPase precipitates located in small vacuoles and the nucleus of microspore mother cell and tetrad microspore.
  结论如下：在花药发育过程中，小孢子母细胞和四分体内的ATPase很少，仅在细胞核及小液泡中分布有少量的ATPase。
• 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？
• The pairing and segregating of homologous chromosomes at the frist and second division of meiosis were conformed with PMC meiosis, and finally, the tetrad were formation.
  在减数第一和第二次分裂中，同源染色体的配对和分离基本正常，最后形成四分体。
• Study on Simultaneous Determination of Pigments in Tetrad Mixtures by Spectrophotometry with Wavelet Transform-Principal Component Regression Method
  小波变换-主成分回归法在四组分食用色素同时测定中的应用研究
• The tetrad analysis of some hybrids led the discovery of two complementary genes systems.
  通过四分体分析发现一些杂种有两种互补基因系。
• There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad.
  造孢细胞，大孢子母细胞和四分体时期，周缘细胞仅1层。
• First, we construct the symmetrized null tetrad from which the spin coefficients and Dirac equation are derived.
  首先，构造对称化零标架，计算旋系数，导出Dirac方程，并对其进行化简。