- 标准: standard; criterion; benchma ...
- 使用年限: service life
- 使用年限: age limit; durability; durable years; duration of service; life expectancy; life span; lifetime; limit of age; operational life; physical life; service life; service period after completion; tenure of use; useful life; working life
- 已使用年限: in the years already spent
- 柱使用年限: column durability
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