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血管病和全血粘滞度有关是一项新近的发现,愈来愈受到应有的重視美《年龄和老化》第10期(1981年)第221页报道G S Rai著文:血液粘滞度即液体流动的难易程度,可作为血液粘滞度的简单定义。从物理学的术语讲,它是切变应力与切变率的比率,切变应力是施加于液体的力,切变率是所造成的流速。在血液中两者之间的关系很复杂。切变应力与切变率的比率(即血液粘滞度)并不恒定,它随切变率而变,而后者又因循环的不同部位而异。血管较大,其切变率明显小于较小的动脉或小动脉,毛细血管的切变率最大。血液的另一重要情况是它需有一个极小的动力才开始流动,此动力称“流动应力(yeild
Vascular Disease and Viscosity of Whole Blood is a New Finder, Increasingly Paid Attention Beautiful “Age and Aging,” Issue 10 (1981) p. 221 Report by GS Rai Text: Blood Viscosity That is, the difficulty of liquid flow, can be used as a simple definition of blood viscosity. In physics terms it is the ratio of shear stress to shear rate, shear stress is the force applied to the liquid and the shear rate is the resulting velocity. The relationship between the two in the blood is complicated. The ratio of shear stress to shear rate (ie, blood viscosity) is not constant, it varies with shear rate, which in turn varies depending on the parts of the cycle. Larger blood vessels, the shear rate was significantly smaller than smaller arteries or small arteries, the largest capillary shear rate. Another important condition of the blood is that it requires a very small force to start the flow, which is called "flow stress