失效频率failure: n. 1.失败 (opp. success); 不及格。 ...frequency: n. 1.屡次,频仍,频繁。 2.(脉搏等的)次数,出现 ...failure frequency: 故障频率frequency of failure: 失败次数; 损坏频率cumulative failure frequency: 累积故障频率下载手机词典可随时随地查词查翻译