网络释义专业释义英英释义
...期 动脉 血流动力学参数 正常组 血流灌注 相关关系 【分类号】： R740 【正文快照】： 血管阻力指数(resistance index,R I)是超声学利用脉冲多普勒测得血流频谱收缩末峰值流速与舒张末峰值流速之差除以收缩末峰值流速的比值[1]。
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参考识别码 (reference identifier)
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复制中间体 (replication intermediate)
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ri [ ri: ]
- n. a state in New England; one of the original 13 colonies; the smallest state
以上来源于: WordNet
柯林斯英汉双解大词典
RI
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1.
ABBREVIATION for Royal Institution 皇家研究所
双语例句原声例句权威例句
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This castle, found in Narragansett, R. I., offers breathtaking ocean views, in addition to its very own man-made lake complete with bridge, gazebos and garden terraces.
这座城堡位于罗德岛的纳拉甘赛特，除观赏人造湖(湖上设有桥，观景阁，庭院露台)外，还可观赏壮丽的海景。
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The number of incoming abstainers has been going up at Roger Williams University in Bristol, R. I.
在位于美国罗德岛州布里斯托尔的罗杰·威廉姆斯大学，不饮酒的新生人数已经开始持续上升。
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R. I. For comparison, 21 control subjects were also scanned — men exposed to blasts recently but with no symptoms of concussion.
为了进行对照，还有21名最近同样经历过爆炸，但没有脑震荡症状的军人也进行了弥散张量成像扫描。
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The American Food and Drug Administration says R.F.I.D.tags act like an electronic safety net to make it easier to catch counterfeits.
VOA: special.2010.03.01
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So, for example, if I have a sodium ion over here, and I have a chloride ion over here, where the distance from center to center r I'm denoting as r, this is nucleus to nucleus separation.
所以，比如这有一个钠离子，和一个氯离子，它们中心与中心间的距离,我把它设为，这是原子核和原子和的间距。
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P dV is equal to R dT. pV = RT for 1 mole, pdV=RdT so I just take dV here.
对等压过程，那么。
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