由于测量过程中，测得的数据不可避免要受到各种随机测量误差的影响，影响到测量结果的准确性。
During the measure course, the measure data will be affected unavoidably by all kinds of error, and the veracity of measure result will be affected.
如果测量误差随机产生，可以期望他们的平均值近于零。
If measurement errors occur randomly, one can expect their mean to approach zero.
相对该方法的随机误差10（-5），无论线偏振器位于反射光路或入射光路中，由它产生的折射率测量误差均可忽略不计。
Compared to the measurement random error (rms ) of the order of 10(-5), the total systematic error caused by the errors mentioned above can be neglect.
应用推荐