例句與造句

1. in this paper, we study the distance of zero points for differential equations with positive and negative arguments by method of polynomial series, and some more explicit conditions to oscillate are given
   本文共分兩部分，第一部分探索了具有正時(shí)滯的微分方程解的零點(diǎn)分布，給出了較為廣泛的振動(dòng)條件；第二部分研究了具有負(fù)時(shí)滯的微分方程解的零點(diǎn)分布。
2. first, we give a polynomial series and study its minimum positive zero points, from this, the theorem of delay differential equations with both positive arguments and constant coefficient is obtained, this theorem is more explicit and practicable
   1具有正時(shí)滯的微分方程解的零點(diǎn)分布為了證明方便，歸納定義多項(xiàng)式序列如下：記多項(xiàng)式_i(s)的最小正根為b_i。定理1
3. It's difficult to find polynomial series in a sentence. 用polynomial series造句挺難的