the rule of composition and resolution of concurrent forces
共点力的合成与分解法则
system of three dimensional concurrent forces
空间汇交力系
system of coplanar concurrent forces
静力学平面汇交力系
The Solution to Node Displacement and Axial Forces of Two-force Rods of Planar and Concurrent Forces
超静定结构中求平面汇交二力杆系节点位移及轴力的方法
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