他幼时得过小儿麻痹症后双腿安上了支架。He wore leg braces after polio in childhood.他把牵引支架固定在船体上。He fixed the towing cradle round the hull.这墙可以作为你的照相机的支架.This wall will do as a rest for your camera....
我对可因子分解多项式一无所知。I have no idea about factorable polynomial.下面写出一直到十次多项式的帕斯卡三角形.Its form up to a tenth degree polynomial is shown below.任何多项式系数的绝对值都构成单峰序列.The absolute values of the coefficients of any chromatic polynomial...