首次换效时间的英文

• time to first failure

• 首次    for the first time; first
• 换    exchange; barter; trade
• 效    effect; efficiency; result
• 时间    time; hour
• 等效时间    equivalent time
• 生效时间    effective time
• 失效时间    dead time; out-of-service time
• 我效时间    lost time
• 无效时间    garbage time; idle time; inactive time; ineffective time; time,ineffective
• 药效时间    effective drug duration
• 有效时间    active session; active time; available time; availabletime; duration of validity; effective time; functioning time; operational use time; pot life; significant interval; time,effective; valid time; virtual time
• 有效时间表    active time list
• 转效时间    break time
• 总有效时间    calendar time
• 失效时间应晚于生效时间    expiration time is earlier than inspire time
• 半数有效时间    median effective time
• 保存有效时间    shelf life
• 报价有效时间    duration of offer
• 部分有效时间    partial effective time
• 等效时间常数    equivalent time constant
• 等效时间取样    equivalent time sampling; sampling, equivalent time
• 等效时间系样    equivalent time sampling
• 公告失效时间    endtime
• 机器有效时间    machine available time
• 口令失效时间    password expiration time