同时存在

Serious corrosion and destroy by the alkalescent waste water from ammonia soda producing process occurred on water treatment buildings in Jiaozuo Xin'an Chemical Factory.

纯碱工艺中碱性废液对混凝土结构水处理构筑物产生较严重的腐蚀和破坏。在其腐蚀破坏过程中，溶解性化学腐蚀、膨胀性结晶化学破坏和强碱腐蚀作用等几种腐蚀同时存在，并相互影响，起作用的影响因子有镁离子、氯离子、硫酸根离子和废液的强碱性等

During esterification of benzyl chloride and sodium formate, benzyl formate is esterilysis which is a reversible reaction, and the mole ratio of benzyl formate to benzyl alcohol is 3:7 because of the chemical equilibrium.

在氯化苄与甲酸钠的酯化反应同时存在甲酸苄酯的水解反应，并且甲酸苄酯的水解反应是可逆反应，受化学平衡的限制，在实验条件下的甲酸苄酯与苯甲醇平衡的摩尔比大致为3：7。

The cash commodity's price must fluctuate enough to create uncertainty, which means both risk and potential profit.

现货商品的价格必须有足够的波动，从而产生不确定性，这意味着风险和利益同时存在。

The computational results indicate that surface catalytic combustion restrains gas phase combustion. Inlet velocity and tube diameters have important influence on catalytic combustion of hydrogen. For smaller inlet velocities,reaction is dominated by gas phase combustion. As the inlet velocity increases,there exist both surface catalytic combustion and gas phase combustion. For bigger inlet velocities,reaction is dominated by surface catalytic combustion. The temperature of flame core decreases with the decrease of tube diameter.

计算结果表明，表面催化反应对空间气相反应有抑制作用；入口速度和管径对氢气的催化燃烧过程有重要的影响，在入口速度较小时，燃烧主要是空间气相化学反应，随着入口速度的增大，燃烧过程同时存在着表面催化反应和空间气相反应两种控制因素，在入口速度较大时，燃烧主要是表面催化燃烧过程；随着管径的减小，微型管道内反应的最高温度降低。

For as it was found that all mathematical inferences proceed in accordance with the principle of contradiction (which the nature of all apodeictic certainty requires), it was supposed that the fundamental propositions of the science can themselves be known to be true through that principle.

所有的数学推论都是遵守着矛盾原理(即是 A 和非 A 不能同时存在)，于是我们猜想所有的基本数学命题都可以通过这个原理来被证明。

We found 1 RTT case simultaneously exist MeCP2 gene mutation and decreased mitochondrial oxygen consumption in cybrids.

首次发现1例患儿同时存在MeCP2突变和融合细胞线粒体氧耗率下降。

Physically adsorbed NO〓 is replaced by SO〓 and desorbed, then the NO〓 adsorption capacity decreases.

当气流中同时存在SO〓和NO〓时，活性炭优先选择性吸附SO〓。

The dualists regard it as a matter governed both by domestic law and by international law, but they hold different views on the relationships between the functions performed by domestic law and by international law.

通过对当代社会中人权的现状进行分析，人权的法律保护在本质上仍是国内法的范畴，同时存在国际性的一面。

A baseline separation of Sitafloxacin epimers was achieved with a background electrolyte of 10 mmol/L KH2PO4-K2HPO4 (pH 4.5), 10 mmol/L CuSO4, 20 mmol/L γ-CD and 10 mmol/L D-Phe. The linear range for Sitafloxacin was 32-400 mg/L (0.996). The relative standard deviations of migration time and peak area were less than 1.9% and 3.8% respectively.

实验结果表明，添加剂的种类和浓度是影响西他沙星手性分离的重要因素，只有当D-苯丙氨酸、铜离子和γ-环糊精同时存在并达到一定浓度时，西他沙星差向异构体在毛细管电泳中才具有良好的分离效果。

At the same time, because of the coil's compensation, the amplitude of fault current is small.

但是由于消弧线圈的补偿作用，接地故障电流比较小，在干扰和测量误差同时存在的情况下，进行故障选线是比较困难的。20世纪50年代以来就开展了&接地选线&的研究，提出了多种选线方法，但没一种方法可以很好的解决接地故障选线这个难题，所以此问题还有必要进一步研究。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失