The author introduced installation technology and skill with the examples of axial labyrinth seal and radial contactseal.
作者以轴向迷宫式密封和径向接触式密封为例，介绍了安装技巧和要点。
2
The main contents of the body sealing are introduced, the concept of body seal and the seal principle are put forward. Two useful contactseal structures are introduced in detail.
介绍了车厢密闭性的主要内容，提出了车厢密封的含义及密封原理，详细介绍了两种实用的接触型密封结构。
3
The general failure model and mechanism of circuit break, loose contact, instant break, male insulation, short-circuit, false matching, poor fix and bad seal were discussed.