内燃机抱轴瓦碾瓦原因及改进措施

针对海拉尔机务段东风4、东风5型内燃机车抱轴瓦碾瓦现象,阐述其造成的主要机理,并提出相应的工艺改进措施及取得的效果。     

GK1C型内燃机车柴油机起动困难故障的判断分析与处理

文章根据GK1c型内燃机车的特点,结合检修与运用实际,有针对性的从引起内燃机车起动困难的电气部分、燃油系统、调速器三方面原因进行技术分析,并提出处理方法,为内燃机车检修及运用中快速排除类似故障提供参考.     

DF_4内燃机车柴油机卸载原因分析

DF4内燃机车为我国现阶段的主力型机车,由于柴油机的卸载造成机故事件时有发生,本文对内燃机车因水温高、电器设备原因引起的卸载故障进行分析并提出了建议。     

X62W型万能铣床电路故障剖析

本文指出了X62W型万能铣床故障所在，并对故障原因进行了分材及对电路提出了改进方案。     

JMY380FA型内燃机车柴油机功率不足故障的判断分析与处理

本文根据JMY380FA型内燃机车用12V135ZJ型柴油机的特点,结合检修与运用实际,详细阐述了该型内燃机车柴油机功率不足现象、产生原因及处理方法,为JMY380FA型内燃机车检修及运用中快速排除此类故障提供参考.     

电容器充放电实验的改进

本文分析了广东教育出版社物理选修3-1中电容器充放电演示实验设计方案的原理和一些不足,对原方案进行了改进,并针对改进后的实验方案进行分析、实践,把改进后实验方案和原方案进行对比,阐明方案的改进对于教学可以产生的促进作用。     

回归分析法在内燃机车冷却风扇试验中的应用

内燃机车冷却风扇作为内燃机车冷却系统的重要组成部分，其冷却能力的好坏，直接影响到内燃机车动力效能的发挥和安全运行，通过对内燃机车冷却风扇在特定条件下实验数据的对比分析，指出了在不同工况下应用该数据进行校核计算时所产生的误差；利用工程流体力学知识，结合通风机的有关特性，总结出了对内燃机车冷却风扇在不同工况下所得出的实验数据的修正方法；介绍了使用实验数据进行回归分析的具体方法，以便应用计算机进行精确计算。     

海勃湾发电厂锅炉超温问题的改进方案

过热器、再热器的气温偏差和超温给电站锅炉的安全稳定运行带来严重威胁,本文针对海勃湾发电厂引起汽温偏差和超温问题的一些主要因素进行分析,提出改进、优化方案,为电站锅炉的安全可靠运行提供帮助。     

某型直升机尾门故障及排除方法研究

从某型直升机尾门故障着手,通过对尾门系统工作原理进行分析,查找到电磁阀、液压管路和电气线路等多处故障点.结合故障逻辑图梳理排故流程,确定排故方法并制定改进措施.理论与实际结合,运用逻辑思维从多角度开展故障分析研究与改进,同时为直升机外场故障排除和维护提供参考.     

160t热剪剪后摆动辊道技术改进及平衡弹簧设计

160t热剪剪后摆动辊道技术结构及存在问题，提出改进方案，并对平衡装置弹簧进行设计和计算。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.