There are still applied physics of leverprinciple.
这里边还运用了物理学中的杠杆原理。
2
The present invention is developed based on leverprinciple or force moment equilibrium principle.
本发明是根据杠杆原理即力矩平衡原理，研制而成。
3
The shear of each model is calculated separately and superimposed to establish the shear bearing formula. The formula of bend is established by leverprinciple.