octagonn.八边形;八角形
octagon bar steel八角条钢
octagonal contour八边折线等值图
octagonal crystal八角晶体
octagon steel bar八角钢条
Octagonal industry八角产业
octagon ingot area八角形钢锭浇注台
octagonal distance八角形距离
octagonal pavilion八角亭
octagonal pierhead八角形堤头
octagonal bar steel八角型钢