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- Methods:16s and 28s protocol for cerebral CTA and CTV was proposed according to the time density curves of internal carotid artery (ICA) and Galen vein of 47 volunteers. 方法:参照47例患者脑颈内动脉、大脑大静脉时间密度曲线,选择16s和28s为脑动、静脉成像扫描延迟时间。
- time density curve 时间密度曲线
- Besides, this paper discusses certain asymptotic properties of density curve and builds some related equations. 此外还讨论了密度曲线的某些渐近性质并建立了一些有关的方程。
- Density Curves Use a smooth curve to describe what proportions of the observation fall in each range. 用曲线来描述有多少比率的观察结果在哪些值之间。
- It was proposed that the collision force curve is inherent characteristic of bow structures and the collision force density curve can quantitatively express the acutance of ship bow structures. 提出了碰撞力面积密度曲线的概念，它可用于定量表达船艏结构对其他结构的破坏能力。
- THE FRACTAL ANALYSIS OF WOOD DENSITY CURVE 木材密度曲线的分形分析
- Neutral printing density curve (NPDC) 中性灰印刷密度曲线
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- Time is sometimes called the fourth dimension. 时间有时被称为第四度空间。
- I think the work can be completed ahead of time. 我认为这项工作能提前完成。
- He will come on time even though it rains. 即使下雨，他还是会准时来的。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- Analysis of Browsing Behaviour in Web Log Based on Time Density 基于时间密度的Web日志用户浏览行为分析
- Optical Density Curve Model for Studying CD -R Dye Coating Process 利用光密度曲线模型研究CD-R染料旋涂工艺
- I need some time to orient my thinking. 我需要一些时间来使我的思想适应。
- Improving vertical resolution for density curves is by means of restructuring the response from large and small spacing sondes and borehole effect correction factor and coherence factor are used. 提高密度测井曲线垂直分辨率是通过对重新组合长、短源距探测器响应的算法来提高补偿密度曲线的垂直分辨率，并加入井眼影响校正因子和相关性因子；
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- At that time he had two helpers. 当时他有两个助手。
- I'm sorry to obtrude on you at such a time. 我很抱歉在这个时候打扰你。
- I referred to my watch for the exact time. 我看了一下手表好知道准确的时间。
