four-fold

英 ['fɔːfəʊld]

美

a. 四倍的；四重的；四垒的
adv. 四倍；四重

双语例句

• Finally, crystallized D-ribose was precipitated by adding four-fold amount of ethanol into the enriched effluent.
  解吸液浓缩后加入四倍量乙醇，可得到结晶D-核糖。
• An ongoing trial in Uganda shows that coverage rates have increased by from two-fold to four-fold.
  目前在乌干达进行的一项试验表明，覆盖率已由两倍增至四倍。
• Paracetamol doubled the risk, while ibuprofen or aspirin increased it four-fold.
  这篇刊登在欧洲领先生殖医学杂志《人类生殖》的文章指出，扑热息痛对男婴生殖能力造成的风险是一般情况的两倍，而布洛芬或阿司匹林为4倍。
• A four-fold division has been proposed for the first time and concrete opinions have been put forward for the determination of the location of the boundary between the Ordovician and Sil-urian.
  首次提出了该区志留系四分方案，并为确定奥陶系与志留系的界线位置提出了具体意见。
• Increases have also occurred almost everywhere, albeit to hugely divergent extents: US incomes per head have risen 23-fold and those of Africa merely four-fold.
  增长几乎出现在全球各地，不过幅度存在巨大差异：美国人均收入增长了23倍，而非洲国家仅增长4倍。
• The Uganda National Tuberculosis and Leprosy Programme calculates that HIV has led to a four-fold increase in TB cases in that country alone.
  乌干达国家结核病和麻风病项目计算出了仅仅在该国艾滋病已经导致了结核病病例增加到了原来的4倍。
• In the experiment, by using GaAs/ AlGaAs QW VCSEL epitaxial chip, the1 × 3,2 × 2, 3 × 3 ID and 2D arrays have been fabricated by the four-fold proton implantation method, and the characteristics have also been measured experimentally.
  实验中，出GaAs／AIGaAs量子阶VCSEL外延片通过四次质子注入工艺制备了IX3、2X2、3X3简单的一维、二维VCSEL列阵器件，并对器件的特性进厅了测量研究。
• One beloved indicator is the price of gold, which has risen four-fold since the early 2000s ( see chart).
  一个备受钟爱的指标是金价。自本世纪初以来，金价已上涨4倍（见图表）。
• While taking advantage of the results the paper conducts a further four-fold decomposition of output of per labor, the results show that inter-provincial differences of the growth of output maken by technical efficiency is the largest in all factors.
  同时利用分解结果进一步进行了劳均产出的四重分解，结果发现，在所有的分解因素中，技术效率所贡献的产出增长率的省际差异是最大的。
• A molecule cannot have a three-fold axis and a four-fold axis in the same direction.
  一个分子不能在同一方向上有一个三重轴和一个四重轴。