In order to keep the equipments in good order, we should carry on the preventive maintenance, but the most important problem in the process of preventive maintenance, is how to determine the maintenance period.
为保持轮机设备处于完好状态,需对其进行预防性维修,而在计划预防维修方式中,最重要的一个问题就是确定维修周期。
参考来源 - 集装箱船轮机维修保养管理研究Methods: We draw specimens from 3 parts of a same patient who was in the expansion of the maintenance period: the most expanded skin (A), border expanded skin(B), normal skin(C). There were totally 10 patients and 30 specimens.
方法:取扩张维持期同一患者的扩张皮肤张力最大处(A)、扩张与正常皮肤交界处(B)和正常皮肤(C)三处标本,共10例患者,30个标本制作蜡块,切片分别做HE染色和PCNA免疫组化染色。
参考来源 - 组织扩张维持期表皮PCNA表达的实验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Spare parts are important material basis for shortening maintenance period of time.
备品备件是缩短检修时间重要的物质基础。
This article mainly addresses the maintenance period of clock frequency of SPC exchanges in China's telecommunication network.
本文主要讨论我国电信网中程控交换局时钟频率维护周期的确定问题。
With the coming maintenance period of the aging road in China, the old asphalt pavement's recycling has become an important issue.
我国许多高速公路路面已经进入全面维修期，旧沥青路面的再生利用是一种主要养护方法。
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