machine failureməˈʃi:nˈfeiljə短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 机器故障; 机器失效 The system is disturbed by many uncertainties such as machine failure and repair, random processing time, preventive maintenance, random demand and so on. 系统同时存在随机故障和修复、随机加工时间、随机预防维护、随机需求等多种不确定因素。 cnki