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定期维修；定期保养
1、etesian periodic───埃特斯周期
2、maintenance───n.维护，维修；保持；生活费用
3、maintenance costs───维修费用；维护费用；维修费用，养护费用
4、periodic inventory───[会计]定期盘存
5、maintenance mode───维护模式
6、periodic───adj.周期的；定期的
7、maintenance free───[化] 不需维修的
8、vehicle maintenance───汽车维护，车辆保养
9、periodic sentence───掉尾句；圆周句（指主要意义至句尾始明白的句子）；圆周句（指主要意义至句尾才明白的句子）
1、The performance of control system will degenerate with elapsed time to a control loop if there is no periodic maintenance.───对于控制回路，如果没有定期的维护，控制XiTong的性能会随着时间推移而退化。
2、Fix packs, represented by FP, are periodic maintenance upgrades, released in between refresh packs.───修复包使用FP表示，是在刷新包之间发布的定期维护升级。
3、And points out that the periodic maintenance is great helpful to reduce the failure rate of CT.───并指出CT的定期保养对减少故障率有很大的作用。
4、daily maintenance and periodic maintenance.───日常保养和阶段性保养。
5、Deck machinery accident diagnosis and analysis, and periodic maintenance services.───甲板机械的事故诊断与分析、以及定期检修服务等。
6、It requires periodic maintenance. It has bugs that need to be found.───它会慢慢腐化，它需要不断定期维护，它有无穷尽的bug亟待发现。
7、However, this condition can be prevented by performing periodic maintenance.───然而，这条件是可以预防的，通过执行定期维护。
1、In order to make machines do a better job, we need to do periodic maintenance work.
2、And pointsthat the periodic maintenance is great helpful to reduce the failure rate of CT.
3、Establish and implement equipment periodic maintenance and maintenance plan.
4、Implement equipment periodic maintenance and maintenance plan.
5、Generally, this necessitated a rather expensive and heavy lens cell as well as periodic maintenance.