校对后的此部分的数学表达式是的翻译：Proof is a mathematical expression of this part of the after 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

After the proof of this part of the mathematical expression is

Proof is a mathematical expression of this part of the after

After the proofreading this part of mathematical expression is

proofreading after a mathematical expression of this Part is

Proof is a mathematical expression of this part of the after