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Among the many remarkable final projects that have been proposed and presented at the end of the course have been a Renaissance hourglass blown in the MIT glass shop and set into a frame turned on our set shop lathe; a four harness loom built by a student who then wove cloth on it; a number of chain mail tunics and coifs; a wide variety of costume and furniture pieces and electrified period lighting fixtures.

在以往的课程中,学生们构想并于期末展示出了很多优秀的作品,比如一个文艺复兴时期的沙漏,它是学生在麻省理工学院的玻璃工作坊吹制、并在我们布景工作坊的车床上成形的;一台由学生制作的四综纺织机,制作者真正用它来织布;许多锁子甲束腰外衣和头巾;各式各样的服饰、家俱和电气化时代的照明设备。

The existing eguipment on railway rolling stocks, backward in technical property and with a single variety, could not meet the reguirement of high speed and heavy load.Chengdu Freight Wagon Factory, with rich manufacturing and maintaining experiences, is the large-scale factory, which manufactures railway freight wagon and freight engine in China. Already turned deficits into surpluses, with the enforcement of raising speed strategy of railway cargo transportation and quickness of technique renew, CFWFs operating system is now facing great challenge of market opening.

成都机车车辆厂就是其中的一个典型,虽然成都厂是国内从事铁路机车车辆维修和机车电机制造的大型企业,具有丰富的生产维修制造经验,但随着铁路电气化和提速战略的实施,技术更新步伐的加快,成机厂的经营机制在几年前就已面临市场开放的巨大挑战,核心产品上的优势地位也受到很大威胁。

Firstly, electrization knowledge related to the research is introduced. After a deep study on various contact loss detection techniques, especially on the electric arcs detection techniques, we draw the conclusion that the untouched detection technique based on phototube sensor can acquire exact contact loss information, and will to be the leading technique for contact loss measurement in future. Secondly, combining with the special railways system in our country, we analyze the cause of the arcs, and the influence on the power supply system and the on board traction drive due to the arcs in detail, and study the arcs' spectrum characteristic. We also analyze detecting principles and put forward with a method - using phototube sensor to detect the contact loss arcs, conceive the configurations and detection flows of the measurement.

文章通过对电气化铁道相关知识的了解及对国内外离线检测技术的深入了解,尤其是对离线电弧检测技术的了解,总结出了基于光电传感器的非接触离线电弧检测系统能够得到准确的弓网离线情况,并且是国内外检测技术的发展方向;文章详细的分析了离线电弧产生的原因,电弧对机车牵引动力的影响情况,研究了我国铁路系统中离线电弧的光谱特征分布;分析了系统的检测原理,提出了采用光电传感器实现对离线电弧进行检测的方法,并设计了"电力机车弓网离线电弧检测装置"的检测功能和管理功能,规划了系统的组成结构及检测流程。

Among the many remarkable final projects that have been proposed and presented at the end of the course have been a Renaissance hourglass blown in the MIT glass shop and set into a frame turned on our set shop lathe; a four harness loom built by a student who then wove cloth on it; a number of chain mail tunics and coifs; a wide variety of costume and furniture pieces and electrified period lighting fixtures.

在以往的课程中,学生们构想并於期末展示出了很多优秀的作品,比如一个文艺复兴时期的沙漏,它是学生在麻省理工学院的玻璃工作坊吹制、并在我们布景工作坊的车床上成形的;一台由学生制作的四综纺织机,制作者真正用它来织布;许多锁子甲束腰外衣和头巾;各式各样的服饰、家俱和电气化时代的照明设备。

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