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。
Are the recommended drugs or supplements safe for your situation, especially if you have a health condition or take medications?
推荐的药物或补充剂是否安全，特别是你如果有一些健康问题或是正在服用药物？
I ended my previous article by describing a particular dilemma: how does a thread deal with a situation where it is waiting for a specific condition to become true?
如果线程正在等待某个特定条件发生，它应该如何处理这种情况？
Some of these will be things that you cannot change, and therefore, you must accept them and endeavor to make the best of the situation or condition.
其中有些东西是你无法改变的，因此，你必须接受它们，并努力做到最好的情况或状况。
He said that he had met three possible buyers, who promised to reply as soon as possible after learning about the young man's living condition and health situation.
他说已有三人同自己联系并见过面，这些人在详细询问他的生活环境和健康状况后，表示会尽早答复。
Sieves soaks with adjoins to the structural relation the change under the physiological condition is meaningful, but in pathology situation, then the significance is not big.
筛泡与毗邻结构关系的变化在生理状态下是有意义的，但在病理情况下则意义不大。
Not a process, but the results of a process: a place, a condition, the situation that comes afterward.
不是一个过程，而是一个过程的结果：一个场所、一种条件以及随后产生的局面。
Analyzing the regional and geography situation is the main condition to establish market mode. It is the most ideal market mode in economically developed region.
分析可得各区域的经济和地理情况是确定市场模式的主要条件，在经济最发达地区的市场模式是最理想的。
In addition, the solution process of equations formed by boundary condition of continuity in different situation is analyzed, and the simple and convenience solution is given.
此外，文章详细分析了由边界连续条件构造的方程组在不同情况下的求解过程，给出了简单方便的求解方法。
It is introduced in brief that the domestic and foreign employed situation of straight welded casing, manufacture technology and production condition, and some researches being done at present.
简要介绍了直缝焊套管国内外使用情况，生产技术以及国内外生产现状，目前正在进行的一些试验研究工作。
Geologic situation, resources and exploitation condition of shanxi loulan Metamorphic Iron Ore Area were introduced.
介绍了山西岚娄变质铁矿区的地质情况、资源储量及开发现状。
The airborne attack cooperated with intrepid attack causes the situation to enter the condition immediately which leans to one side.
空中的打击配合着地面的强悍攻击，马上使局面进入了一边倒的状态。
Based on the summary of internal research situation and the condition that we posses, the key problem and development thinking of domestic PTA technology were discussed.
在总结国内研究状况和所具备的条件基础上，论述了PTA技术国产化的关键问题及其开发思想。
This paper researches on the tool wear condition monitoring by cutting sound signal and workpiece surface texture based on analysis of the relative situation.
本论文在分析现状的基础上，从切削声信号和工件表面纹理这两个方面对刀具磨损状态监测技术进行了研究。
The paper discussed the habitat condition, grassland production ability, current production situation and existing problems of arid grassland in Loess Plateau of east Gansu Province.
论述了陇东黄土高原沟壑区干旱草地的生境条件，草地生产能力、生产现状及存在的问题。
For the design of desilting basin, the reasonable operation and prototype observation design should be offered according to the river sediment situation and pivot operation condition.
沉沙池设计应根据河流泥沙情况及枢纽运行条件，提出合理的运行设计和原型观测设计。
This paper presents the basic situation, geological engineering condition of the landslide and the emergency treatment technique after occurrence of the large deformation.
本文介绍了该滑坡的基本情况、工程地质条件、出现变形后采取的应急防治措施。
Have introduced the production technology course, technological condition and raw materials and product quality situation used of the inferior gold potassium of cyaniding.
介绍了氰化亚金钾的生产工艺过程、技术条件及所用原料和产品质量情况。
There is basic condition for the opening market operation, although it is big distance between current situation and the requirements to use the opening market operation method efficiently.
从我国目前的情况看，已初步具备了开展公开市场业务的基本条件，但与有效运用公开市场业务手段的要求距离还很远。
Considering the characteristics and relative regulation of petrochemical production, the safety measure blocking leakage was put forward in various condition, in combination with practical situation.
根据石化系统生产特点及有关规定，结合实际情况，提出了各种情况下的堵漏安全措施。
This situation makes the concept of elementary volume and Saint-Venant's deformation compatibility condition used in continuum mechanics problematic.
这种情况使连续介质力学中使用的基本体元的概念及圣维南变形协调条件受到了置疑。
The situation in which it produces long side condition in triagulation net, trilateration net, triangulateration net and traverse is explained.
说明在测角网、测边网、边角同测网和导线中产生长边条件的情况。
The permeability calculated by use of well test data which is acquired under the reservoir dynamic condition can reflect the real infiltration situation of the reservoir accurately.
试井资料是在油藏的动态条件下测得的，由此求出的渗透率能够较好地反映油藏在动态条件下的渗滤情况。
It is suitable to the nonmotile source condition and transportation situation, adapting easily to environment, and getting into favour with the medical staff and field first-aid personnel.
它适于无动力源条件下和运输转运情况下使用，对环境条件的依赖性小，受到医务人员和野外急救人员的欢迎。
In the new situation of information explosion, information literacy has become an important condition for contemporary university students to adapt to the brutal social competition in the future.
在当今社会处于信息爆炸的新形势下，信息素质已经成为当代大学生能否适应未来残酷社会竞争的重要条件。
In Chapter One, the basic condition and the current employment situation of 4050 people are analyzed through a great deal of basic datum study.
第一章通过大量的基础数据研究分析了4050人员的基本情况和就业现状。
It may provide the good solubility under the low temperature condition and guarantees the oil bath type evaporator good oil discharge situation as well as the good heat change efficiency.
在低温状态下它可提供良好的溶解度及确保油浴式蒸发器良好的回油情况以及较好的热交换效率。
According to the condition of Jiangxi Province and the water resource utilization current situation, the corresponding countermeasure on reasonable exploitation of water resource is proposed.
根据江西省水资源面临的态势，结合江西省省情和水资源利用现状，就水资源合理开发利用提出了相应的对策。
According to the condition of Jiangxi Province and the water resource utilization current situation, the corresponding countermeasure on reasonable exploitation of water resource is proposed.
根据江西省水资源面临的态势，结合江西省省情和水资源利用现状，就水资源合理开发利用提出了相应的对策。
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