- 恶性循环 èxìngxúnhuán vicious circle
- 循环赛 xúnhuánsài round-robinround-robin tournament
- 循环系统 xúnhuánxìtǒng circulatory system
- 循环性 xúnhuánxìng circulatoryrelating to the property of movement or flow within a closed system
- 循环论证 xúnhuánlùnzhèng circular reasoningA logical fallacy where the conclusion is assumed in the premises, also known as begging the question or petitio principii.
- 燃料循环 ránliàoxúnhuán fuel cycle
- 良性循环 liángxìngxúnhuán virtuous cyclevirtuous cycle (positive feedback loop)
- 血液循环 xuèyèxúnhuán circulationblood circulation
- 冠脉循环 guānmàixúnhuán coronary circulation
- 郎肯循环 lángkěnxúnhuán Rankine cycleRankine cycle (engineering)
- 循环使用 xúnhuánshǐyòng recycleto reuse materials through a recycling process to minimize waste
- 循环经济 xúnhuánjīngjì circular economy
- 循环节 xúnhuánjié repetendThe recurring sequence of digits in a repeating decimal.
- 柠檬酸循环 níngméngsuānxúnhuán citric acid cycleA series of enzyme-catalyzed chemical reactions that form a key part of aerobic respiration in cells, also known as the Krebs cycle or tricarboxylic acid cycle.
- 死循环 sǐxúnhuán infinite loopendless loop