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In addition, if one 2 CNF expression is satisfiable, the algorithm for solution can give every solution without backtracking.

本文首先证明了该问题有解的充要条件，然后给出了判定该问题的一个新的多项式算法。

Accordingly, the accident of sulfide stress corrosion cracking should be taken into account.The SSCC sensitivity and cracking time of 16Mn steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values, simulated solution and operating solution were investigated by constant strain bend and slow strain rate test.Hydrogen diffusion coefficients of 16Mn steel, 16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估。

A customer centric self-serve oriented business solution is proposed, with which the SMB users can obtain a software solution meets their specific requirements in a self-serve fashion. A prototype system named AppDiy Platform was devised to show its feasibility.

提出了一种以客户为中心的面向自服务的解决方案，使中小企业用户能够以自服务的方式，根据其具体需求，创建满足其特定需求的企业应用；并且设计开发了AppDiy平台来验证该方案的可行性。

In quite a lot of applied fields, the solution concentration is one of the most important parameters that reflect a series of the solution characteristics.

中文摘要溶液浓度是反映溶液性质的重要参数之一，在工业生产中通常需要对溶液浓度进行监控来保证产品质量。

A good way to built a stable damping effect of pH value, as a result of juice fountain solution of radiofrequent acid, with the General, in the changes of inclution, fountain solution of pH value will have greater volatility, inclution inappropriate will affect printing plate service life (on the printing plate produced corrosion).

慢冲剂主给起安定润版液pH值的功用，因润版液原液凡是呈硷性，随着慢；洋剂补偿度的改变，润版液的pH值会有较不小的颠簸，补偿度不不合不兵感化印版的搁置寿命。

In each kind of battery solution servosystem, the battery solution servosystem which is composed by the PWM solenoid valve, has many unique merits.

在各种电液伺服系统中，由PWM电磁阀组成的电液伺服系统，具有许多独特的优点。

Then studied on several clays affect on the stability of ferrate solution. The results show the addition of clays retarded the decomposition of ferrate in alkaline solution. Through analysed the results of test, we found this due to the silicium or polysilicium of clays and its increasing stabilizing effect on ferrate when the concentration of silicium or polysilicium increases.

接着作了粘土对高铁酸盐溶液的稳定作用的研究，结果表明粘土对高铁酸盐溶液有良好的稳定作用，通过实验分析得到其稳定作用是由于粘土中溶出的硅酸根或多聚硅酸根所致，且随着其浓度的增加对高铁酸盐的稳定作用增强。

It indicates that singular solution exists in solving problems of elasticity, which is inconsistent to the theorem of uniqueness of solution.

结果表明，在弹性力学问题中存在奇异解的情况，这与弹性力学解的唯一性定理是不一致的。

Stainless steel had a good antic-corrosive performance in alkalic solution and sodium carbonate containing uranium solution.

铀铌合金在环境气氛中有良好的的抗腐蚀性能。

The results showed that the different mass concentration of HPAM's absorbance decreases slightly when the PH value of the buffer solution is 5.0, but its reproducibility is better;In order to make the absorbance become more stable, the reaction time was identified adding proper quantities of bromine water, sodium formate and starch-cadmium iodide reagent to the solution separately; the mass concentration curve of the HPAM was draw, by means of the straight degree of the curves, the coincidence degree of the straight line about the concentration of every sampling point and so on , it shows that the mixer has good mixed effect compared with the standard curve.

如下是一些主要问题：1）文章的行文格式。文章没有按照一般科技论文的表述方式，如1是引言，2是常用方法，其实这都应该是第一部分引言里应该介绍的，引言中应扼要介绍文章的研究背景、目的，意义，采用的主要方法等。还有3是实验装置，4是实验步骤，应该这些都是第二部分，试验材料与方法。2）文章的内容。文章应主要介绍本研究的具体内容，但是本文没有，如3 实验装置部分，这个721分光光度计的原理与论文内容联系不大，根本没必要介绍，标准曲线的研究应该放在最前面等。3）文章的表述不清。如HPAM是何物，文章一直没有介绍，什么曲线的直线度、浓度与直线的重合度、什么加入溴水后的时间，应该是反应时间，总之表述不清！ 4）文章的图表。图标绘制的很难看。如图2，应该纵坐标起始点从0.25开始，这样图形就会美观很多，图3又没有纵坐标标注，还多了一个纵坐标等。5）文章的结论。文章的结论中有些严格来说不是结论，而是实验中的现象与操作注意事项。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。