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
英英释义
noun
- the cardinal number that is the sum of three and one
双语例句
- 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。 - Abnormal tetrad rates in different generations were 0.16, 0.13 and 0.36 respectively.
异常四分体频率各代分别为0.16、0.13和0.66。 - The merit of viewing the four as a tetrad rather than selecting only three to form a triangle is that it gives greater prominence to quality.
把这四个变量看成是四元的而不是选出三个组合成三角形，它的优点在于：它给质量上带来了很多显著的帮助。 - In the course of the embryonic development, after the microspore tetrad is formed, although some forms of the microspore were under developed, and lose of protoplasm, but some have formed normal microspore.
在胚胎发育过程中，小孢子四分体形成后，虽然出现有些小孢子形状不规则，原生质少或无等现象，但也有发育正常的花粉粒。 - 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 - 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； - Microspore abortion occured after the tetrad formation.
小孢子败育发生在四分体形成以后。 - 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。 - This phenomenon occurs in the early tetrad stage.
这个现象在早期四分体阶段出现。 - 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？