English : useful life Simplified Chinese : 使用期限，有效寿命 Traditional Chinese : 使用期限，有效壽命 Example :: useful life
Chinese : 有些塑料被设计成在它们有效寿命结束时可以腐烂掉或生物降解掉。 English : Some plastics are designed to rot or biodegrade when their useful life is over.
Chinese : 试验研究为轮盘定寿、延寿提供了试验依据。 English : Test research provided experimental basis for useful life assessment and prolongation of disk.
Chinese : 通用会计准则只规定了选用的折旧方法必须将成本在资产使用年限内进行合理、系统的分配。 English : Generally accepted accounting principles require only that a depreciation method result in a rational and systematic allocation of cost over the asset's useful life.