结合具体实例，从下料、装配、焊接、矫正四个流程对大型吊车梁的制作进行了介绍，并对V形坡口、K形坡口的对接，腹板与翼缘板组对以及焊......

Mathematical models in seismo-geochemical monitoring offer powerful tools for the study and exploration of complex dynam......