We measured the amount of DNA on pairs of daughter cells at different population doubling levels of human fibroblasts.
我们在不同人种的人成纤维细胞的倍增水平中测定成对子细胞的DNA含量。
Experts say all the surviving animals and their descendants are now wild, and to avoid the population doubling every year the animals are subject to a carefully managed cull.
专家说所有幸存的动物以及它们繁殖的后代都是野生的，为了避免它们的数量每年双倍的增加，这些动物都会被细致的管理控制宰杀。
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。
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）。
During the Vietnam era as liberalized immigration policies began doubling and trebling America's long-suppressed Asian population the, Asian male became targets of scorn and ridicule.
越战时期，由于移民政策的放宽，长期受到抑制的亚洲人口数量开始成倍地增长，甚至三倍，亚洲男性成为奚落和嘲笑的对象。
Members of parliament question the logic of half-emptying Tehran while simultaneously introducing incentives aimed at doubling the national population;
议会的议员们在采取激励措施使全国人口增加一倍的同时，又在讨论将德黑兰人口减半。
Last week, the first Asian ministerial conference on tiger conservation, in Hua Hin, Thailand, set a goal of doubling the wild population by the start of the next tiger year, in 2022.
亚洲第一届以老虎保护为议题的部长级会议上周在泰国的华欣召开。会上制定的目标是，到2022年，即下一个虎年年初，使野生老虎数量翻倍。
Also disputed is whether projected world population growth to more than 10 billion people by the year 2100 will result in a doubling or tripling of atmospheric concentrations of carbon dioxide.
另一个争议是关于世界计划人口到2100年突破100亿是否会使大气中二氧化碳含量增加一倍到两倍？
We can't keep doubling human population.
人类的人口不能再翻一番。
The world population is doubling every thirty-five years.
世界人口正以每三十五年增加一倍的速度增长。
First, no person who died before 1930 had lived through a doubling of the human population.
第一，在1930年以前过世的人，一生中从未发生过全球人口倍增的情事。
If you look at the population of centenarians, it is about doubling every 10 years.
如果你观察百岁老人的人数，它大约每10年就增加一倍。
It also brought several thousand wild bears, more than doubling the EU's bear population overnight.
罗马尼亚还带来了几千只野生熊，一夜间使欧盟野生熊的总数量翻倍还多。
It also brought several thousand wild bears, more than doubling the EU's bear population overnight.
罗马尼亚还带来了几千只野生熊，一夜间使欧盟野生熊的总数量翻倍还多。
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