2 . beautiful appearance : bdi gratings latticework will neatly match and will make a nice geometrical ensemble 2外形美观，经久耐用：热浸锌表面处理使其具有相当好的防腐能力，表面光泽美观。
2.
1 . strong , lightwight : bdi gratings consist of a latticework of bearing bars and cross bars joined to each other in a fixed configuration by projection welding 1高强度，轻结构：牢固的网格压焊结构使其具有高承载，结构轻，便于吊装等特点。
