The connectionboard not only has a simple structure and applies in large scale working, but also is easy to assemble.
而且这种连接板的结构简单，适合于大规模批量加工，组合安装也非常方便。
2
The utility model of the lamp switching support is convenient for users to install and use by arranging a connectionboard to fix the two switching nodes.
本实用新型灯具转换支架通过设置一连接板连接固定二转换接头， 方便用户安装使用。
3
Guide vane operation structure includes the guide vane arm clip board, guide vane arm, segmental keys, connectionboard, handle, cut pin, connecting rod pin and gland, etc.