This is the 11742nd most frequent Korean word.
내구연한이
"내구연한이" means "durability period" or "service life" in English.
In this context, '내구연한이' refers to the duration for which the machine can last or maintain its durability.
이 기계의 내구연한이 얼마인가요?
What is the lifespan of this machine?
Here, '내구연한이' denotes the period after which the products are considered to have completed their durability lifespan.
내구연한이 지난 제품은 교체해야 합니다.
Products past their durability lifespan need to be replaced.
In this case, '내구연한이' is used to indicate the durability period that impacts maintenance due to longevity.