The essence of internal force is the force between atoms.
举一反三
- Economic changes are an internal force of change.
- The magnitude of the internal force of a bar depends on not only the external force but also the shape of its cross section. A: 正确 B: 错误
- The internal force of any structure is zero if it is not subjected to external loads.
- The internal forces in a thin plate under bending deformation include: A: bending moment B: twisting moment C: shear force D: axial force
- 库仑力与万有引力之间的关系是___The relationship between the Coulomb Force and the Universal Gravitation Force is___