However, there is a severe problem on calculating error propagation in Tong Fu s formulae in the case of relatively small inclination.

然而，当倾角较小时，童付的公式存在严重的计算误差传递。

youdao

The error associating with the working distance and inclination angles is measured by using a specially designed device, and compensated via an improved BP neural algorithm.

提出了倾斜误差的检测方法并设计了检测装置，利用改进的BP神经网络模型实现了倾斜误差的补偿。

youdao