A set of method and formula for the computation of calendar first D check, calendar time since overhaul and total calendar life is presented by using tests data.
建立了一套由试验数据估算日历首翻期、日历翻修间隔、日历总寿命的方法和公式 ；提出了由使用中真实的腐蚀损伤数据来估算日历首翻期的方法 ；
The steering control module was a sealed unit, opened only during overhaul, with no specified overhaul time, and had accumulated 3,860 hours since last overhauled on March 3, 1998.
掌舵的控制模块是一个密封的单位，在检修期间只打开，没有指定彻底检查时间，并且3,860个小时自从最后在1998年3月3日彻底检查。
The steering control module was a sealed unit, opened only during overhaul, with no specified overhaul time, and had accumulated 3,860 hours since last overhauled on March 3, 1998.
掌舵的控制模块是一个密封的单位，在检修期间只打开，没有指定彻底检查时间，并且3,860个小时自从最后在1998年3月3日彻底检查。
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