Some quadratic equations have no real roots.
某些二次方程没有实数根。
The positive part and negative part of the real roots can be used to judge the stability of the system.
由实部根轨迹的负与正可以判定系统的稳定性。
In this paper, the author studies how to get the intervals of all the real roots, and give a easy method.
文中对如何确定方程所有实根所在区间进行了研究，并给出一种简便快速的方法。
For extraction of real roots of an equation, an iteration method with large scope convergence is presented.
提出求方程实根的一种大范围收敛的迭代方法。
This article at first analyzes the causes of poverty of western rural women, summarizes the real roots resulting into their poverty.
本文首先分析了西部农村妇女贫困的原因，总结了造成她们贫困的真正原因。
This paper proposes a iterative formula for solution to real roots of nonlinear equations, proves convergence of the iterative series.
本文给出一个求非线性方程实根的迭代公式，证明了由此产生的迭代叙列的收敛性。
In this paper, we discuss when a quartic equation has no real roots, and obtain a necessary and sufficient condition on a quartic equation which has no real roots.
本文讨论了一元四次方程无实根的一些充分、必要条件，并得到了一元四次方程无实根的一个充要条件。
I also use it as a connection between family life, family roots and just to make the adventure more real.
我也用它来连接家庭生活、家庭根源，并让冒险更真实。
Nonetheless, evidence has grown in recent years that the syndrome is real, and now there is news that it has its roots in genetics.
但是，这些年所发现的事实证明这种综合症是真实存在的，而现在又有消息说它的根源来自遗传。
ALEX: These are grass roots blogs in African languages. But there is real excitement here about the possibility of the mainstream Internet speaking other languages too.
阿列克斯：这些用非洲语言书写的博客都很平民化，但其蕴含的可能性却很令人兴奋，在主流的互联网上也可以用其它语言。
The bamboo ceiling is real, but its roots, and our failure, stem from our success.
竹天花板是真实存在的，但它的根源和我们的失败，正源于我们的成功。
According to the General Stability Criterion, a closed loop system will be stable if and only if all the roots of the characterized equation have negative real parts.
根据总体稳定性判据，闭环系统稳定，当且仅当所有的特征方程的根有负面真正的部分。
Methods of using the D-decomposition curves to judge whether all the roots of the characteristic equation possess a negative real part are also discussed.
文中也提出了利用分划曲线来判定系统特征方程具有全部负实部根的方法。
Methods of exploring the real number roots of a real coefficient polynomial function are procedurally given.
较程序化地给出了实系数多项式函数实数根的求法。
This paper presents a new method in which all roots of a higher degree algebraic equation with real coefficients can be found out.
本文介绍了一种求实系数高次代数方程全部根的新方法。
Scheduling problems, batch scheduling with controllable processing times have deep roots in the real world.
分批排序问题和加工时间可压缩的排序问题有着深刻的根源。
A real factorization method based on evolutionary algorithms is proposed for finding tbe roots of the characteristic equation of a linear time-invariant closed-loop system.
针对线性定常闭环系统特征方程的求根问题，提出了一种基于演化算法的实因式分解法。
A real factorization method based on evolutionary algorithms is proposed for finding tbe roots of the characteristic equation of a linear time-invariant closed-loop system.
针对线性定常闭环系统特征方程的求根问题，提出了一种基于演化算法的实因式分解法。
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