admin 百科大全 CCSDH40DNVDH40ABSDH40GLDH40LRDH40BVDH40RINADH40NKDH40KRDH40VLDH40 DH40船体结构用钢,D质量等级,H是高强度钢材,40代表屈服强度,可要求厚度方向性...