基本解释n.一半高度同根派生 英汉例句Thrust varies with elevation and is usually maximum at midheight. 它可以通过断面上的应力的总和求得。Design of Yanghe Road Midheight Deck Steel Pipe Concrete in Yangji City Arch Bridge 延吉市延河路中承式钢管混凝土拱桥的设计