What's the meaning of 虚化 in Chinese linguistics?
結果補語的「虛」與「實」

漢語動結式（又稱黏合式述補結構）中有一類的補語被稱為「虛化結果補語」，包括「完、好、掉、住、成、著、了、過等」


根據過去的研究，虛化結果補語區別實義結果補語的特點是：皆由實義動詞虛化而來、本身詞匯意義不明顯、語義指向述語、不是動結式的語義中心、主要表示動作事件「完結、結束」等。但是，這些區別特點主要都體現語義層面上，而句法上，無論是對前項動詞的選擇、還是與賓語的搭配，虛化補語與實義補語並無明顯差異

We are familiar with the aspect markers below:
吃(eat) --&gt; 吃了 (eat is a completed action)
吃(eat) --&gt; 吃過 (eat is an experience action)
They are on the list of 虛化結果補語. And the article stated 虛化補語 is mainly used for indicating the verb is 'completed/ finished' and 實義補語 mainly used for indicating the result of the verb. e.g. 斬斷 (chop-apart); 切掉 (cut-away). 斷 is the result complement of the verb 斬; 掉 is the result complement of the verb 切. They indicate the 'actual result' of the verb
From the same article:

而句法上，無論是對前項動詞的選擇、還是與賓語的搭配，虛化補語與實義補語並無明顯差異


實義结果補語 (actual result complements) and 虛化结果補語 (virtual result complements) are practically identical in syntactic.

My knowledge in linguistics terms is based mostly on Hong Kong Standard Written Chinese (SWC). It is likely different from linguistics terms used by Mandarin speakers in the mainland. But I hope my input would help you find the most accurate translation of the term in question
I was taught '斷' and '掉' in '斬斷' and '切掉' are &quot;verb particles&quot;; '了' and '過' in '吃了' and '吃過' are &quot;aspect markers&quot;