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1·When cultured in vitro, PDMSC3 attached to the dish and grew with a doubling time of 46 hours.

在体外培养时，PDMSC3呈现贴附生长的特性，族群增倍时间约为46小时。

2·In the present study, the effect of X rays on el 4 cell doubling time and cell cycle progression were investigated.

目的研究不同剂量X射线照射对EL4淋巴瘤细胞周期进程及细胞倍增时间的影响。

3·Compared with negative control group, the doubling time of both positive control group and experimental groups was prolonged.

与阴性对照组比较，阳性对照组和实验组细胞群体倍增时间增加。

4·In many early pregnancies, the hCG level will double every 31 to 72 hours. As the pregnancy progresses, hCG levels rise and the doubling time increases.

许多的早孕，和HCG水平每31 - 72小时会翻倍，随着怀孕的进程，HCG水平的上升以及翻倍的时间也会增加。

5·Results During long term cultivation, the population doubling time of the cells became shorter and the percentage of aneuploidy chromosomes and colonies grown in soft AGAR increased.

结果卵圆细胞在培养过程中倍增时间逐渐缩短，非整倍体染色体数目增加，在软琼脂中生长的克隆增多。

6·According to consumption rate models of energy sources, we estimate accumulative consumption of resources, doubling time, maximum consumption rate and the time of maximum consumption rate.

通过建立能源消费的模型，估算几种矿物资源累积消费和倍增时间、最大消费率及达到的时间。

7·Results Population doubling time of corneal stromal cells prolonged significantly since passage 7. MTT assay also showed cell viability of passage 7 decreased to 60% of passgage 1 (P< 0. 01 ).

细胞群体倍增时间由第7代起显著延长（P<0.01）； MTT比色法的结果亦显示，第7代细胞的增殖能力开始大幅下降（P<0.01）。

8·In the meantime, I recommend doubling your time estimations for completing a task.

与此同时，我推荐你加倍的评估你完成任务需要的时间。

9·Without it, a cargo ship sailing from Italy to Singapore had to go around the southern tip of Africa, doubling the time and distance.

没有它，一个意大利货轮到新加坡不得不绕过非洲南端，双倍的时间和距离。

10·My organization found that by making mental estimates and then doubling those mental estimates, we still required 30 percent more time to complete those tasks.

我的组织发现通过进行纯精神的预计再将预计的结果翻倍之后，我们仍然需要再加30%的时间才能完成这些任务。