拱顶高度; 拱脚

arch spring fastening chord of arch sagging of arch arch of the throw arch arch- number of spring leaf pitch of spring bar diameter of spring spring of curve compressed height of spring curving of spring spring arch spring arch clasp pubic arch of pubis arch of thoracic duct rising of arch Endarterectomy of aortic arch Arteriotomy of aortic arch block of suspended arch lateral expansion of arch fracture of vertebral arch anterior arch of atlas