老化: age; ageing; burn-in; prebur ...失效: lose efficacy; lose effectiv ...期: designated time老化故障期 老化失效期: lossfailureperiod失效期: beyond-use date; exp date; expiration date; expiry date劣化失效: deterioration failure生化失效法: biochemical neutralization退化失效: degeneracy failure; degradation failure; deterioration failure耗损失效期: wear out failure period; wear-out failure period偶然失效期: constant failure period失效期权: lapsed option损耗失效期: wear out failure period早期失效期: debugging period; earlier failure period; early failure period正常失效期: normal failure period触碰失效期权: knock-out option贮藏与失效期: storage and duration of efficacy失效日期,有效期限: expiration date (expiry date)早期失效期 调整期: debuggingperiod轮换贮备及失效期观察: rotating stock and observance of expitation dates早期失效期, 早期故障期: early failure period效期: date and place of expiry; expiry date老化: age; ageing; burn-in; preburning; maturing 干部老化 the aging of cadres; 设备老化 the aging of equipment; 知识老化 the aging of knowledge; 老化试验 aging test; 老化稳定性 aging stability; 老化系数 aging coefficient; 老化现象 ageing phenomenon 失效: 1.(失去效力) lose efficacy; lose effectiveness; cease to be effective 这药已失效了。 the medicine no longer has any effect.2.(无效) (of a treaty, an agreement, etc.) be no longer in force; become invalid 条约的失效 voidance; voidness of treaties; 一张失效的支票 an invalid cheque; 自动失效 automatically cease to be in force; 这张证明已失效。 this certificate is invalid.; 失效保险 fail-safe; 失效检验 failure detection; 失效率 [物理学] failure rate; 失效提单 stale bill of lading; 失效支票 stale check; 失效准则 failure criteria城市化失控: uncontrolled urbanization格式化失败: formar failure; format failure