Archo阿尔绍archn.拱；拱门；拱状物v.成拱形；拱起adj.主要的；调皮的arched-trussn.拱形桁架archaeopterids古羊齿类archegoniateae颈卵器植物archaeotourism考古旅游arched conduit拱形管道Archambaudiere阿尔尚博迪埃arch bar truck菱形转向架,菱形车架arch ring type拱圈线型arch formation拱桥构造,架桥现象Arch form area弓形面积