A type of polymerization where monomers react in a stepwise fashion to form dimers, trimers, and eventually long chains. This process typically involves the reaction of functional groups on the monomers. Examples include the production of polyesters and polyamides.

单体逐步反应形成二聚体、三聚体，最终形成长链的聚合类型。此过程通常涉及单体上官能团的反应。例子包括聚酯和聚酰胺的生产。(Dān tǐ zhú bù fǎn yìng xíng chéng èr jù tǐ, sān jù tǐ, zuì zhōng xíng chéng cháng liàn de jù hé lèi xíng. Cǐ guò chéng tōng cháng shè jí dān tǐ shàng guān néng tuán de fǎn yìng. Lì zi bāo kuò jù zhǐ hé jù xiān àn de shēng chǎn.)