Conclusion:Not only R but Z of umbilical artery affected with PI of waveforms, PI of umbilical artery was directly associated with the R/Z.

结论：脐动脉的PI不仅反映了阻力的变化，而且间接受阻抗的影响； PI直接反映了R／Z比值。

youdao

I can't remember their names either, but their last names begin with "R" and "S" and "A".

我也记不住他们的名字，但他们的姓氏是由“R”、“S”和“A”开头的。

youdao

Innovation is not simply about increasing R&D investment, but also about transforming the learning environment.

创新并不仅仅意味着增加研发投资，还意味着要在教育中改变学习环境。

youdao

But they have the sound of "R."

VOA: special.2009.07.26

But the nymphs in all of their sensuous beauty, with "flow'r-inwov'n tresses," they have to experience the same fate.

但是年轻女神很美丽，但头发被扯断了“,她们不得不经历同样的命运。

耶鲁公开课 - 弥尔顿课程节选

I've been using the blackboard a little ad hoc here, but suppose I neaten things up here now and present this rectangle is let's say R RAM, the memory inside of your computer.

我在这里特别地使用这块黑板，假如我整理这些东西，把它们呈现,这个长方形，假如说就是内存，你电脑的内存。

哈佛公开课 - 计算机科学课程节选

Users can interact with the data through Excel or a language like R, but all the data and the calculations are consistent, he said.

FORBES: Managing Risk Beyond The Limits Of Excel

But R movies are a hard sell because they cut out so much of the movie-going population (teenagers).

FORBES: Guillermo Del Toro Makes Hollywood Nervous

But Toys R Us also sells the Kindle, in stores only, and it runs Google Ads for online competitors including Apple.

FORBES: Hey Walmart: Instead Of Kicking Out Kindle, Stop Running Ads For The Competition