companion: n.1.伙伴,伴侣;朋友。2.(一对中的)一方。3.最下级勋爵。4.〔书籍杂志名〕指南,必读,必携,手册,5.〔pl.〕伴生种,伴(细)胞;【天文学】伴星(=companion star)。6.雇来照料病人[老人]的人。短语和例子a boon companion酒友。 companion for life 终身侣伴[配偶]。 a Teachers' C- to ... 教师
By companion matrix of polynomial gave one necessary and sufficient conditions of two polynomial having common roots , according to the above gives one method to solute dual higher order equation 摘要利用多项式的伴侣阵给出两多项式有公共根的一个充要条件,并据此给出解二元高次方程的一种方法。