existence condition

常见例句

Moreover, the generalized rotated vector field, constructed in the present paper, is used for obtaining the existence condition of period solutions for another system.
然后，利用构造的一个广义旋转向量场得到另一系统的周期解的存在条件。
The unique existence condition for minimal determining set of social choice function is studied, when independent irrelevant condition is replaced by independent decisiveness condition.
研究在社会选择理论中，将独立无关性条件弱化为独立决定条件时选择函数最小决定集的唯一存在性条件。
In this paper, the unique existence condition of minimal determining set in social choice theory is researched, and the relation between minimal determining set and choice function is analyzed.
本文研究了社会选择理论中最小决定集的唯一存在性条件，分析了最小决定集与选择函数之间的相互联系。

And yet we know that evil is a condition of human existence.
但我们知道，邪恶是人类生存的一种状况。
耶鲁公开课 - 旧约导论课程节选
The condition of our whole existence is but to struggle with evil, to compare them, to choose between them, evils that is, and so far as we can to mitigate them.
我们整个生活状况,就是在与邪恶相斗争中,不断地比较和选择,然后决定什么是邪恶,这样我们才能消除邪恶
耶鲁公开课 - 美国内战与重建课程节选

It is as though we are determined to regress to the most primitive condition of existence in the animal world, of the survival of the fittest.
ECONOMIST: The Johannesburg summit