OK, thanks. Does it work really? I'll give a try.

好的。谢谢。真的有用么？我来试试。

Benjamin: OK, thanks. Does it work really? I'll give a try.

本杰明：好的。谢谢。真的有用么？我来试试。

Introduce a try to grind precision spherical crown, including its principle and method, discuss the possible tolerance and give a formula to control the quality.

介绍了为磨削高精度球冠所做的尝试，阐述了所采用的磨削原理、技术方案，讨论了加工误差，推导了控制球面轮廓误差的公式。