MethodsVC++ language was used and the mathematic model of spacial curve was established which contained tangential velocity,curvature and deflection. ECG and VCG two leads system were used to collect cardiac electricity signals simultaneously.
方法采用VC++语言,建立心电环空间曲线的切速率、曲率和挠率数学模型,用ECG和VCG两个导联体系同步采集心电信号。
参考来源 - 心电向量环微分几何心电图数学模型的临床应用·2,447,543篇论文数据，部分数据来源于NoteExpress
分析了狭缝口型中的一维复合共挤出流动，叠代计算得到两相界面位置以及速度、剪切速率和切应力的分布。
The interface between two molten polymers, as well as the distribution of flow rate, shear rate and shear stress were obtained by using an iterative calculating scheme .
蒸腾计：通过茎切段或整个植物体来测量水分吸收速率的仪器。
Potometer an apparatus for measuring the rate of water uptake by a cut shoot or whole plant.
食品聚合物科学认为：在玻璃态下，造成食品品质变化的一切受扩散控制的反应，其速率均十分缓慢，甚至不会发生。
The food polymer science demonstrates that under the glass state, the change of food quality is controlled by the reaction of diffusion, which is quite slow in speed or even could not happen.
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