Yet that is a necessary but not sufficient condition for its success.
然而，对于它的成功来说，这是一个必要条件，但不是充分条件。
The IMF suggests that a sufficient (although not necessary) condition for a global recession is any year in which world GDP per head declines.
IMF认为世界年度人均GDP下降是全球经济衰退的一个充分条件（而不是必要条件）。
Powerful chemical agents are a necessary but not sufficient condition for a chemical warfare capability.
高效的化学毒剂满足化学战的必要而非充分条件。
You mean a necessary condition but not sufficient.
你是说经历伙伴之爱是必要但不充分条件。
So it's a sufficient condition for an argument being valid that there is no possible situation where the premises are true and the conclusion false. And that's a necessary condition too.
所以这对于论点有效性是充分条件，没有可能前提为真，结论为假，这是必要条件。
Good presenters know that the content (data, evidence, logic) is a necessary condition but not a sufficient condition for a truly world class presentation job.
优秀的讲演者知道，内容(数据、证据、逻辑)只是真正的世界级讲演的必要条件，而非充分条件。
Being able to trace who said what is a necessary condition for building a system of trust, but this is not generally sufficient by itself.
能够跟踪谁说了什么是构建可信系统的必要条件，但只有这一条件，通常还不够。
In other words, basic science is a necessary but not sufficient condition for remaining industrially competitive.
换句话说，保持工业强大的竞争力，基础科学是必须的，但并不是全部。
Our modern lifestyle is thus a necessary, but not a sufficient, condition for the high prevalence of obesity in our population.
我们的现代不良生活方式是个必然因素导致肥胖，但并不是致使我们整体人口数量中肥胖人口快速蔓延的全部原因。
But, it seems equally clear that this necessary condition (call it the neutrality condition) is not sufficient.
但是，同样显然的是，这个必要条件也是不充分的。
Is being 20 years old a necessary or sufficient condition for being a college student?
就成为大学生而言，年满20岁是必要条件还是充分条件？
Is having the flu virus in your blood a necessary or sufficient condition for being sick?
对生病而言，你血液里有流感病毒是必要条件还是充分条件？
That is a necessary but not a sufficient condition, as the type of rock involved, called carbonaceous chondrite, is found in other asteroids, too.
他有两方面的证据：第一，现存的灾难性撞击的残骸与Baptistina和她的后代有相同的成分，这是必要条件，但并非充分条件，因为含碳的球粒状陨石在其它小行星上也有；
Is sunlight a necessary or sufficient condition for the roses to bloom?
阳光是玫瑰开花的必要条件还是充分条件？
Is attending class regularly and punctually a necessary or sufficient condition for being successful in class?
按时按点上课，对学好这门课而言，是必要条件还是充分条件？
However, the Working Group argues the data centres location is neither a sufficient nor a necessary condition to mitigate infrastructure risks.
但是，工作组怀疑设立数据中心对减轻基建风险既不是有效也不必要的条件。
The sufficient and necessary condition of controllability and reachability of a class of linear switching systems which has the same systematic matrix and different input matrixes is given.
给出一类线性切换系统能控性、能达性的充分必要条件，此类系统的特征是具有相同的系统矩阵和不同的输入矩阵。
Based on Darboux theory, this paper discussed the integrability of the Riemann Integral and provides a necessary and sufficient condition for integrability.
文章利用达布和理论，讨论了黎曼积分的可积性问题，给出了一个可积的充分必要条件。
In this section, we also establish a necessary and sufficient condition for the algorithm of the mixed scheduling.
在这一部分里，我们同样得到了一个任务集可以用混合调度算法调度的一个充分必要条件。
In this paper, some necessary and sufficient condition about the equivalence of two column vector groups has been discussed.
本文论述了两列向量组等价的一些充分必要条件，并应用泛函分析的理论进行分析。
The question as to whether binarity is a necessary and sufficient condition to produce barium star is addressed.
讨论了双星是否是产生钡星的必要和充分条件，因为已知道的钡星系统全是双星。
A sufficient and necessary condition in terms of the compactness of super-distance space is given based on the property of super-distance space and the related theory of compactness.
利用超距空间的基本性质及拓扑空间紧致性的相关理论，给出超距空间为紧致空间的充分且必要条件，并讨论了一些相关性质。
In this paper, We give a necessary and sufficient condition that closed decomposable operator, is strongly decomposable.
本文给出了封闭可分解算子是强可分解的一个充分必要条件。
Moreover, a judgement condition for live and bound WAC net system is given, and the sufficient and necessary condition for WAC net liveness monotonicity is shown.
同时，提出了活的有界的WAC网系统的判定条件，进而给出了WAC网活性满足单调性的充分必要条件。
Necessary and sufficient condition for existence of the controller is established, and complete parametric representations of the controller are presented.
建立了该控制方案存在的充要条件，并给出了该控制方案的完全参数表示。
The sufficient and necessary condition of possession justice is the both justice of acquirement and transfer.
持有正义的充要条件是获取与转让同时是正义的。
By the singular integral equation theory we obtain the resolvable sufficient and necessary condition and the formula of counting index for the problem.
同时利用带位的奇异积分方程理论得到了这一问题可解的主要条件及指数计算公式。
Based on this, the sufficient and necessary condition under which a set of GD-Constrai NTS is a minimal cover is given.
在此基础上，给出了一个GD -约束集成为最小覆盖的充要条件。
Based on this, the sufficient and necessary condition under which a set of GD-Constrai NTS is a minimal cover is given.
在此基础上，给出了一个GD -约束集成为最小覆盖的充要条件。
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