To assure all the machines in company in a good state , according to the plan established by maintenance supervisor 按照设备维护主管的建立的计划，定期维护维修，保证机器的良好状态。
All servers will be coming down at 6 : 00 am pst for scheduled maintenance . the maintenance should last for approximately 4 hours 所有服务器将在上午6 : 00pst为定期维护。维护应该持续大约4个小时。
Prepare preventive maintenance document and planning to be implemented for main equipments / tools / buildings of the industrial installation of ast 准备定期维护文件，计划实施ast主要工业设备/工具/厂房的安装。
Analyze the direct labor cost , including measure the work hours , stipulate the standard work hours , maintain and readjust the standard work hours 生产人力成本分析,包括测量作业工时，制定标准作业工时，并定期维护变更标准工时
Services include inspections , predictive maintenance programs , modernisation services , preventive repairs , on - calls and spare part services 其维修服务包括：设备的检测、预期保修计划、现代化维修服务、定期维护、上门服务和零部件维修服务。
All testing equipment must be suitable for the intended purpose , qualified , calibrated and maintained . suitable records must be maintained for each instrument 所有试验设备应满足预定要求、经过确认、校准合格并定期维护。每台仪器应有相配的记录。
Maintenance oil natural and white may be used for the maintenance of all oiled wood surfaces and is especially suitable tor the regular maintenance of oiled wood floors 自然色维护油和白色维护油适用于所有油面木地板的维护，特别适用于油面木地板的定期维护。
In the 70 ’ s and 80 ’ s , these data were stored in the expensive middle or mini servers and system administrators had to back up the data periodically , which needed huge amount of investment 七、八十年代,这些数据都被存放在昂贵的中小型机中,由管理员定期维护其中的数据,但这需要较大的投资。
With the development of the aero - engine on - condition maintenance , technology of engine condition mortoring and fault diagnosis has been broadly used in developed contry 随着航空发动机的维护方法从定期维护向视情维护过渡，军用发动机状态监控与故障诊断技术在航空发达国家已得到广泛应用，而在我国，这项技术的应用研究还处于起步阶段。
To overcome the difference between material of dissipative installing different and the main body of structure , speciality of design and analysis and needing periodic maintenance , the topic present a new kind of dissipative device , the damper with concrete ductility column 为了克服耗能装置与结构主体材料不同、设计分析专业性强且需定期维护的缺点,本文提出一种新型耗能装置? ?混凝土延性柱耗能器。
