doublings

英

美

(doubling 的复数) n. 加倍, 双重, 折迭, 重合, 折回, 防护板, 加强板
[计] 双倍, 双重
doubling 的复数

When the ratio of the execution time of point additions to that of point doublings is 3 during computing scalar multiplication, the parallel efficiency of the proposed algorithm could be best, 90%.
当计算标量乘的点加时间是点倍数时间的3倍时，其并行效率最高可达到90%。
Research Progresses in Chromosome Doublings of Medicinal Plants
药用植物染色体加倍的研究进展
Change of Telomere Length of Human Embryo Lung Diploid Fibroblasts ( 2BS) at Different Population Doublings
人胚肺二倍体成纤维细胞端区长度的代龄变化
Cultured cells lose the ability of DNA synthesis, mitosis, and finally the ability of cell proliferation after they have undergone a finite number of population doublings in vitro, though the cells still maintain the basic metabolic process.
体外连续培养的细胞在有限次数的细胞分裂后，丧失合成DNA及分裂的能力，最后导致增殖能力的丧失，但基本代谢过程仍能维持，这种现象称为复制衰老。
Till now, it had been cultured more than 60 population doublings, and no malignant appearence could be found. 2.
目前细胞已稳定传至60余代，未发现有恶性变倾向。