长城词典·城墙城墙是长城的主体建筑形式。各年代、各地长城的建筑材料和构造不尽相同。以建筑材料分，有砖砌、砖石混筑、石砌及夯土版筑等几种。从建筑结构分，有平顶型、封顶型、单边墙及劈山墙等类型。 Great Wall dictionary·WallWall is the main form of construction of the Great Wall. Various materials and structures have been used for the Wall construction. Based on its material，it can be classified as brick masonry，brick and stone masonry，stone masonry and rammed earth style. Based on its architectural structure，it can be classified as flattop，sealing top，single-sided wall，and cutting-through-hills wall.
