英语翻译1.桁架中所有的结点均为理想铰,即光滑无摩擦铰接.2.桁架中所有杆的杆轴绝对平直,且通过其两端铰的中心 .3.荷

1.In the truss all points are the ideal articulations, namely smooth non-rubs the hinge. in the 2. truss all pole's pole axis is absolutely straight, and passes its both sides articulation the center. the 3. load and the support on the articulation point, namely on the truss all external forces are joint forceses. the ideal truss computation obtains the endogenic force (axle strength) calls the principal stress, the corresponding stress calls the principal stress. But as a result of produces with the ideal hypothesis deviation the additional endogenic force is called the inferior endogenic force, the corresponding stress calls the secondary stress