In some sentences small changes have been made - "particle" is sometimes replaced with "debris" when describing the residues left in machine oil-but whole sections of the theses are identical.

某些句子做了很小修改，如当解释留存在机油中的残留物时，用“碎片”代替“颗粒”，但是，两论文该部分几乎完全相同。

youdao

The two texts above are similar-if words "particle" and "or" and a comma are removed, they are identical.

上面的两段文字是相似的，如果把“颗粒”和“或者”，以及一个逗号拿掉，它们则完全相同。

youdao

The final chapter deals with identical-particle symmetries and their application to the he atom, the Periodic Table and diatomic molecules.

最后的章处理相同粒子的对称性和对他的他们的申请原子，周期表和双原子的分子。

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Working on a theory to combine quantum mechanics with Einstein's special relativity, he realised his equations predicted a corresponding anti-particle for every particle in existence - identical in every respect, but with an opposite electrical charge.

BBC: The problem with anti-matter