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

• 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。
• 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。
• 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。
• 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 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 abnormality of tetrad callose wall degradation and tapetum development was associated with the abortion of microspore.
  导致小孢子败育的原因与四分体胼胝质壁不适时解体和绒毡层细胞发育异常、延迟解体有关。
• 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。
• 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。
• 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 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？