数控机床进给系统故障维修分析

进给系统作为数控机床的核心部件,故障率较高,故障原因复杂,维修周期长,所以故障的快速诊断变的尤为关键。文章主要根据笔者多年维修经验,对进给系统出现的常见故障进行分析总结提出解决的思路,供大家参考。     

水泥混凝土路面的养护与维修

文章以柳南高速公路小平阳—宾阳段综合治理工程为例,分析了水泥混凝土路面的病害,并根据工程实际提出水泥混凝土路面的养护和维修措施。     

浅谈CT球管的维修养护及故障分析

CT球管是CT机最昂贵且最易消耗的核心部件,其维修养护将直接影响到CT机的正常运行,进而对医院的经济效益和社会效益也带来直接的影响。文章就CT球管使用过程中的常见故障及日常维修养护进行介绍,对CT球管的维修和养护具有一定的参考价值,为延长球管使用寿命,降低医院成本提供可行建议。     

城乡统筹：农村基础教育功能的修复和拓展

城乡统筹是我国新时期在科学发展观指导下的发展战略与发展路径的必然选择。它对于农村基础教育的本体功能和社会功能能起到修复的作用,并且在实现城乡一体化的过程中,其功能可进一步拓展。因此,中央及地方各级政府,统筹规划,各司其责,才能培养出具有现代文明素质、能适应现代社会生活和社会发展的公民,实现整个民族的伟大复兴。     

Maintenance and repair expenditures: determinants and tradeoffs with new capital goods

Traditionally economic analysis has focused on new capital investment, while ignoring expenditures to maintain or repair existing stock. Recent, broader theories of replacement have emphasized the important role played by both maintenance and utilization rates. However, the decision to extend the service life of capital has been given scant empirical attention, owing partly to a lack of appropriate data. This study exploits survey data that report annual maintenance/repair expenditures for Canadian manufacturing industries. A standard production framework, modified to incorporate endogenous depreciation, guides the econometric analysis. The empirical results indicate that the cost of capital, among other variables, has a statistically significant effect on maintenance/repair decisions.     

发动机电缆修理方法研究

发动机电缆结构复杂,故障情况多样,常规的电缆修理方法不仅成本较高,而且维修效果并不是很理想。由于发动机电缆的修理质量,直接关系到发动机使用的可靠性。因此,本文通过对一款大型发动机电缆的故障分析、研究,探索出一套提高该型发动机电缆修理质量的修理方法,以实现维修效果的提升,降低维修成本的目的。     

关于嘉兴市凤桥镇冯家大院修缮工程施工监理要点

结合文物工程的特点,明确古建筑的文物的修缮的原则和规范,分析了文物修缮工程的施工监理要点。     

Effective Repair in Survey Interviews

In standardized survey interviews with closed-ended questions it quite often occurs that respondents do something else than mentioning their choice from the set of response categories presented together with the question. In these cases their initial response is inadequate and interviewers have to initiate repair activities. By analyzing 804 question–answer sequences, stemming from parts of a survey with elderly people (N=201), we found that 322 (41%) of the initial responses were inadequate. In 74% of these 332 sequences the interviewers made an attempt at repair. Of all repair attempts, 75% were performed correctly, that is, in a nondirective way. Most of the repair attempts (86%) result in an adequate final response of the respondent. The result of the repair activities by the interviewers is that the number of sequences with an adequate response increased from 472 to 688, thus an increase of about 45%. There does not exist ‘one best way’ of repairing. The most important thing is that some repair initiative has to be taken by the interviewer and that the repair is done in a nondirective way.     

浅谈农用拖拉机维修保养技术

随着市场经济的不断发展和进步,大小农用运输车和拖拉机逐渐增多,而"半路出家"的生手也很多,出现故障束手无策,所以学习和掌握农用运输车和拖拉机的一般知识,学会农用运输车和拖拉机常见故障的应急修理是当务之急,本文结合一些实际工作经验,简要地阐述了农用拖拉机维修保养技巧及其应注意的问题。