本发明包括：连接器的端盖、底座、锁紧机构和与其连接的球形连接杆。
The invention comprises an end closure, a base and a locking mechanism of a connector, and a ball connecting rod connected therewith.
本文论述沈阳老站圆形候车大厅保护性改造工程中，采用扣件钢管框架支撑半球形穹盖进行更换钢筋混凝土柱及基础的施工。
In its construction, engineers adopted fastener steel pipe frames to support the semi-spherical dome in order to replace reinforcement concrete and foundation of the station.
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