中间纵梁 meaning in Chinese

intermediate longitudinal girder
secondary longitudinal

In cross calculation , the structure subject to cross force and the reverse force of elasticity support can be derived from the bottom elasticity support on each longitudinal beam ; then , with the elasticity reverse force as the loading reversed acting on the side walls and the middle longitudinal beam , the longitudinal beam subject to force can be calculated
横向计算中，底部弹性支承在各纵梁上，可求得结构的横向受力与弹性支承反力；然后将弹性反力作为荷载，反向作用于侧墙和中间纵梁上，进行纵向梁的受力计算。