Through comparison and analysis the result gained from micro - scale theory and macro - scale theory , we can drew several conclusions as follows : 1 . as the knudsen number ( kn number ) is very small , the inaccuracy would be neglect , when the macro - scale theory is used to solve the problems which were proposed in the paper 通过对微尺度理论和宏观尺度理论研究结果的比较,可得以下几条结论: 1 、由于knudsen数( kn数)很小,用常规尺度理论求解本文所研究的微小通道内的流动阻力,其误差可忽略不计。