Backhoe loader is a type construction machine and its working equipment is a special eight - bar mechanism.
挖掘装载机是一种新型工程机械，其装载工作装置是特殊的八杆机构。
2
The paper discusses the application of beret truss bearers in prestressed concrete process tie bar arch bridge construction after mechanical calculation.
通过力学验算，初步探讨组合式贝雷桁架片托架在预应力砼系杆拱桥梁施工中的应用。
3
Combining work practice, the paper focuses on the coal mine's adopting of anchor hollow bar supporting roadway mechanism, construction process and its technique parameters.