or.tho.trop.ic
adj.（形容词）Tending to grow or form along a vertical axis.直生的：倾向于沿竖直轴生长或形成的Of or relating to a bridge deck consisting of steel plates supported by ribs underneath.正交各向异性的：属于或关于下面有拱状物支撑的铁板组成的桥面的
【引伸】
or.thotrop.ically
adv.（副词）orthot.ropism
