享受生活 SVW LAVIDA

人们买车,就是为了让自已的生活质量变得更高,上海大众的新车——朗逸深谙此道,力求在车型丰富的紧凑级轿车市场中以配置取胜,争做舒适和安全的楷模。     

从SH-5的发展看中国两牺飞行器的未来

水上飞机是飞机发展史上的一个重要部分，摆脱机场束缚的水上飞机可以方便地利用内陆河流、湖泊和沿海地区的峡湾作为起降场地，充分发挥比常规飞机对机场依赖小、使用灵活的优点。世界各国在水上飞机出现后不久就发现了其所具备的优势，水上飞机在军、民用领域的广泛应用也促进了相关技术的发展。水上飞机平时可以进行运输、救灾、灭火等工作，战时可以完成海上巡逻、侦察、救护、反潜、对作战舰艇进行海上物资、弹药补给等任务，水上飞机还是对距离较远而又无法修建常规机场的岛屿进行物资供应的最迅速手段。     

铁道车辆内装修材料的燃烧试验方法

防止铁道车辆火灾事故,是维护列车安全运行的重大课题。根据韩国地铁事故的经验教训,有必要对铁道车辆内装修材料的防火性能、燃烧试验方法做相应改进。文章介绍了采用车辆用内装修材料,考虑大火源情况下进行燃烧试验的方法、试验结果和有效性评价。     

郑新立：汽车产业前景可期国内车企应抓住时机做大做强

2013年中国汽车发展国际论坛领袖峰会盛大开幕，本次论坛对“新环境下中国汽车产业的责任和未来”的主题进行了探讨。主要有两方面内容：     

奔驰722.9自动变速器机械传动与油路分析(七)

<正>本期分析奔驰722.9自动变速器倒挡机械传动与油路工作流程,如图13所示,看机械元件工作表得知,挂入倒挡时,B3制动器开始工作,目的是制动前排的大内齿圈,BR制动器开始工作,目的是制动后排的行星架和中间排的内齿圈,K3离合器开始工作,把后排太阳轮和中间排太阳轮联接成为一个整体。     

提高隧道内整体道床翻修施工中支承块安装精度的措施

如何提高支承块的安装精度,一直是运营线隧道内整体道床翻修施工中致力解决的问题。从施工过程中几个关键环节,分析隧道内整体道床翻修施工中支承块安装出现误差的原因,提出提高支承块安装精度的措施。     

提高汽车产品竞争力的模内装饰工艺2008模内装饰国际研讨会一瞥

目前,模内装饰工艺主要应用在汽车仪表板、中空面板、门板嵌件、装饰条等内饰产品,及汽车保险杠、后视镜、门板的扶手等外饰产品.     

Correlation analysis between the interface membrane and loose hip prosthesis

Objective To analyze the cause of prosthesis loosening by observing the interface membranes harvested during the hip restoration operation. Methods A total of 28 specimens of interface membrane around the loose prosthesis were harvested from 28 patients undergoing the restoration of total hip replacement. All the specimens underwent the observation of appearance, light microscopy and scanning electronic microscopy(SEM). Results All the gaps around the loose prosthesis were filled with interface membrane of different thickness. The color of the most interface membrane was madder red, and the other one third of membrane was black. The comparatively thicker membrane was similar to scar connective tissue while the thinner was similar to fiber membrane. A large number of wear debris, macrophages and foreign-body giant cells were found under light microscope. With SEM observation a large number of different diameter collagen fibra structures that looked like scar tissues were arranged disorderly in a great mass, foreign particles and bone debris of different size were distributed unevenly, and the fibroblast was distributed in the collagen fiber. Conclusion Wear debris is related to inflammatory cell response around the interface membrane of the loose prosthesis. The wear debris engulfed by macrophage stimulates the interface membrane to release bone resorption factors (such as TNF) which lead to osteolysis, and this is one of the most important causes of the prosthesis loosening.     

货车钩舌销孔内壁无损检测方法探讨

针对货车厂修时,如何发现13、13A钩舌销孔内表面缺陷,提出了相应的解决措施,保证了货车运行的安全性。     

大型内齿圈齿形的加工

利用线切割机和计算机辅助设计CAD/CAM转换软件,及自行设计配套工装,按照图纸技术要求加工出外径Φ4500 mm,分度圆直度为Φ3888 mm的大型内齿圈内齿,从而解决以我们目前设备无法加工的难题。