- 永久性 yǒngjiǔxìng permanence; permanentthe state or quality of being permanent; perpetuity; eternity
- 永久磁铁 yǒngjiǔcítiě permanent magnetA magnet that maintains its magnetic properties for a long period under normal conditions.
- 永久居民 yǒngjiǔjūmín permanent residentpermanent resident; person with the legal right to live in a country or territory indefinitely
- 永久居留权 yǒngjiǔjūliúquán permanent residencyThe legal right for a foreign citizen to live and work in a country indefinitely
- 永久居留证 yǒngjiǔjūliúzhèng permanent residence permitA document that allows a person to live and work indefinitely in a country; permanent residency permit
- 永久虚电路 yǒngjiǔxūdiànlù permanent virtual circuitpermanent virtual circuit; a logical connection between two nodes in a network that is always available
- 永久齿 yǒngjiǔchǐ permanent teethThe set of teeth that grow in after the [[乳牙|乳牙|ru3 ya2]] have fallen out; normally consists of 32 teeth.
- 永久冻土 yǒngjiǔdòngtǔ permafrostsoil or rock that remains frozen for at least two consecutive years
- 永久和平 yǒngjiǔhépíng lasting peacelasting peace; enduring peace