例句與造句

1. in the second chapter, we obtain the necessary and sufficient condition where the cubic kolmogorov type system is bounded if homogeneous polynomials of degree 3 are relatively prime . and we obtain there are only four behaviours of the trajectories near the equator of the bounded cubic system if the homogeneous polynomials of degree 3 are relatively prime . in the third chapter, we study the existence and nonexistence of limit cycle for a class of bounded cubic systems
   第一章為引言；第二章，我們得到了齊三次項互素時三次kolmogorov型系統(tǒng)有界的充分必要條件及其在赤道上孤立奇點附近軌線的分布情況有且僅有四種；第三章，我們研究了一類有界三次kolmogorov型系統(tǒng)極限環(huán)的存在性與不存在性。
2. in the second chapter, we obtain the necessary and sufficient condition where the cubic kolmogorov type system is bounded if homogeneous polynomials of degree 3 are relatively prime . and we obtain there are only four behaviours of the trajectories near the equator of the bounded cubic system if the homogeneous polynomials of degree 3 are relatively prime . in the third chapter, we study the existence and nonexistence of limit cycle for a class of bounded cubic systems
   第一章為引言；第二章，我們得到了齊三次項互素時三次kolmogorov型系統(tǒng)有界的充分必要條件及其在赤道上孤立奇點附近軌線的分布情況有且僅有四種；第三章，我們研究了一類有界三次kolmogorov型系統(tǒng)極限環(huán)的存在性與不存在性。
3. It's difficult to find homogeneous polynomials in a sentence. 用homogeneous polynomials造句挺難的