simultaneouslyadv.同时地simultaneousadj.同时发生的；同步的Simultaneous placement同时放置simultaneous iterative[计] 同时迭代法simultaneous treatment并行simultaneously removal同时催化去除simultaneous oxidation同时氧化Simultaneous inversion联合反演simultaneous summation同时性叠加simultaneous replacing同时替换simultaneous threshold同时阈限simultaneous mechanism同步机构

1. Cytokinesis was simultaneous and the arra ngement of microspores in the tetrad was tetrahedral.
   胞质分裂为同时型，四分体中小孢子排列呈正四面体形。
2. Cytokinesis in microspore mother cells is simultaneous, forming tetrahedral tetrads.
   小孢子母细胞的分裂属于同时型，产生四面体排列的小孢子。