组一次 meaning in Chinese

abcdc、d

You can also loop through the collection once for each group , using the
属性确定循环数，您也可以依次通过集合中的每个组一次。
From analyzing the reasons of a typical uncontrollable high speed accident on the c50 - 90 / 13 - 1 type steam turboset , the general character of this accident was conduced , and a successful countermeasure was proposed
摘要通过对c50 - 90 / 13 - 1型汽轮发电机组一次典型的飞车事故原因分析，归纳汽轮机飞车事故的共性，提出有效的预防措施。
Based on new materials and methods , this paper analyses the tandem and segmental duplication , then estimates the num of the lost gene after gene duplication in the arabidopsis gene family , and we find an evidence for the whole genome duplication in arabidopsis which happened about 80 million years ago
采用新的数据和方法研究拟南芥基因组的基因倍增过程，通过分析串联基因倍增和大规模基因倍增的存在比例和同义置换率分布，并估计大规模倍增后基因流失的比例，揭示了拟南芥基因组一次非常明显的全基因组倍增，采用科学的方法佑计这次倍增发生在约8000万年前。