耐たい用よう

noun, noun which may take the genitive case particle 'no'

durability; service life

Technical term often used in contexts like accounting, engineering, and product specifications, especially in the phrase 耐用年数 (useful life).

See also: 耐用年数

• この機き械かいの耐たい用よう年ねん数すうは10年ねんです。