Measuring principle of wheel alignment parameter and its inherent errors;
车轮定位参数测量原理及系统固有误差
Liu Qihou offered the definition of iterative sequence with error in metric space and proved the convergence of iterative sequence.
LiuQihou提出了度量空间中带有误差的迭代序列的定义,并研究了迭代序列的收敛性。