中文摘要：

流动电阻比在正常流动通过液体粘性被澄清的在微规模流动是更高的现象。分别地，与 2.5 m ， 5 m ， 7.5 m ，和 10 m 的内部半径在熔化硅石 microtubes 基于 deionized 水流动的试验性的结果在沿着试管的轴的水流动速度和压力坡度之间的关系被分析，它逐渐地作为 microtube 减少的半径变得非线性。从关联，水流动的一个粘性模型源于 microtube 的半径，压力坡度被建议。粘性模型修改的流动结果根据实验的那些，它被数字模拟软件和 Hagen-Poiseuille 方程验证。在有 5.03 m 的直径的熔化硅石 microtube 的试验性的水流动速度，没在粘性模型的试穿和推导被使用，被证明是与粘性模型一起的 comsistent，显示出有 5.56% 的相对差别的一根相当好的火柴。

英文摘要：

The phenomenon that flow resistances are higher in micro scale flow than in normal flow is clarified through the liquid viscosity. Based on the experimental results of deionized water flow in fused silica microtubes with the in- ner radii of 2.5 μm, 5μm, 7.5μm, and 10 μm, respectively, the relationship between water flow velocity and pressure gradient along the axis of tube is analyzed, which gradually becomes nonlinear as the radius of the microtube decreases. From the correlation, a viscosity model of water flow derived from the radius of microtube and the pressure gradient is pro- posed. The flow results modified by the viscosity model are in accordance with those of experiments, which are verified by numerical simulation software and the Hagen-Poiseuille equation. The experimental water flow velocity in a fused silica microtube with diameter of 5.03 μm, which has not been used in the fitting and derivation of the viscosity model, is proved to be comsistent with the viscosity model, showing a rather good match with a relative difference of 5.56%.