Definition
置换 is a formal/technical verb meaning 'to replace, substitute, or permute'. In chemistry it refers to displacement reactions (e.g., 置换反应); in mathematics it means permutation (reordering elements). The general sense of 'replacing one thing with another' is common in engineering and everyday contexts. Use it when the replacement is systematic or structural.
v.
(general) to replaceto substitute(chemistry) to displace (in a reaction)(mathematics) to permute
Examples
- 置换。Wǒmen xūyào zhì huàn zhège jiù línɡjiàn.We need to replace this old part.
- ，置换。Zài huàxué fǎnyìng zhōng, lǜqì néng zhì huàn xiù.In chemical reactions, chlorine gas can displace bromine.
- 置换。zhì huàn qún shì shùxué zhōng de yí gè zhòngyào gàiniàn.Permutation groups are an important concept in mathematics.
Browse more HSK 7-9 words or search the full 43,000-word dictionary.