但随着机车牵引吨数和列车长度的增加，车体和车钩缓冲装置所承受的纵向、横向动态载荷急剧增大。
However , because of the increasing traction tonnage and the length of train of locomotive , the longitudinal and lateral dynamic loads which loaded on body between coupler and draft gear will sharply increase .
牵引吨数