三价

The result showed that the one-valence cationsaccelerate the hydration process of α-hemihydrate gypsum greatly because they improvethe dispersed degree of α-hemihydrate gypsum particles due to the remarkable effect ofincreasing theζpotential; the effects of bivalent and trivalent cations on ζpotentialdecrease in turn, compared with monovalent cations, the effects on both the disperseddegree of α-hemihydrate gypsum particles and the setting time of paste are little.

研究还表明：由于一价阳离子能较大程度地提高石膏浆体的ζ电位，因而有效地提高了石膏颗粒的分散程度，对α半水石膏的水化加速作用很大，而二、三价离子对石膏浆体的ζ电位影响依次减小，对半水石膏颗粒的分散程度和浆体凝结时间的影响均不如一价阳离子作用大。

Effects of Cast Iron and Chromeplate Tap on Over Night Tap Water Quality;2. The develop ment status of current microcrack chromeplate technology is introduced.

三价铬镀铬在实际应用中最大的问题是工艺的稳定性差，而阳极是影响硫酸盐三价铬镀液稳定性的关键。

This invention discloses a method for preparing monodisperse oil-soluble surface-modified ferric oxide nanoparticles. The method comprises: mixing ethanol solution of soluble ferric salt with ethanol solution of fatty acid, adding alkali, stirring to obtain precursor of ferric oxyhydrogen fatty acid salt precipitate, and cracking at 210-280 deg.

一种制备单分散、油溶性表面修饰氧化铁纳米微粒的方法，将可溶性铁盐的乙醇溶液与脂肪酸的乙醇溶液混合，加入碱搅拌得前驱体三价铁氢氧脂肪酸盐沉淀；单元前驱体三价铁氢氧脂肪酸盐在无溶剂下直接热解得目标产品。

Besides, it makes some modifications for the model and puts forward a new rule of multi-case variable substitution to solve the problems posed by the Chinese constructions called "JianYu", which are similar to the object control constructions in Chomsky's model of Principle and Parameter Theory.

同时，汉语一价动词、二价动词和三价动词的词项行为也是解释代词隐现的重要基础。本章验证了第四章解析模型中对汉语一般计算规则的限制条件，证明了对汉语词项行为的刻画是合理的。

The research status, related technology and policy of hexavalent chromium electroplating and alternatives to hexavalent chromium electroplating were introduced.

介绍了六价铬电镀及取代六价铬电镀特别是三价铬电镀的研究现状和有关的技术及政策。

In each category, semantic and syntactic valent models of verbs are generalized.

第三部分：对俄语三价动词的配价能力进行了全面分析。

In each category, semantic and syntactic valent models of verbs are generalized.

根据三价动词的词汇—语义特点把动词划分成五个语义小类并概括出每小类动词的语义价模式以及句法价模式。

I put into production since the Secretary has been actively introduce advanced production equipment innovation and technology, in order to meet customer orders in Europe and the United States has launched a new demand for environmental protection trivalent chromium process, for the plating of the following: trivalent chromium, chromium -, A half-chrome, pearl chromium, Heiqiang color, green bronze, gold, champagne.

我司自投入生产以来，积极创新引进先进生产设备及工艺，为满足欧美客户订单的需求现已推出新型环保三价铬工艺，镀种为以下几种：三价铬，光铬，半光铬，珍珠铬，黑枪色，青古铜，金色，香槟色等。

Zirconolite rich ceramics and Perovskite rich ceramics are fabricated for the incorporation of simulated trivalent actinide wastes, and the physical properties、XRD、SEM and durability tests are performed.

针对模拟三价锕系元素的固化，分别合成了富钙钛锆石固化体和富钙钛矿固化体，并对其主要性能进行了分析和比较，为其对三价锕系元素的固化提供了依

The fusion DNA fragments of ag85b-mpb64 and ag85b-mpb64-esat-6 were obtained by PCR andSOE technique. Various DNA vaccines were constructed with the pcDNA3.1: fusion of two genes, and of three genes, bivalent combinations and trivalent combinations(pCA+pCM+pCE6). BALB/c mice were vaccinated with this DNA vaccines.The mice injected withBCG were positive control and the mice injected with pCDNA3.1 and PBS were negative control.The mice were immunized 3 times with 2-wk intervals. The animals in group BCG were only inoculatedsubcutaneously with 1×10~6 CFU BCG at initial vaccination. The serum IgG titers and IgG isotype weredetermined using iELISA coated with M. bovis PPD and rMAE protein expressed and depurated inprokaryotic expression system every week.

同样，利用PCR和SOE技术，获得牛分枝杆菌mpb64-ag85b和mpb64-ag85b-esat-6融合基因，以pCDNA3.1为载体构建了牛分枝杆菌多价组合和多基因融合DNA疫苗：二基因融合(pCDNA3.1-MPB64-Ag85B，简称pCMA)和三基因融合(pCDNA3.1-MPB64-Ag85B-ESAT-6，简称pCMAE)DNA疫苗；二价组合和三价组合(pCA+pCM+pCE6)DNA疫苗，免疫BALB／c小鼠，以牛分枝杆菌BCG免疫组为阳性对照，以pCDNA3.1及PBS免疫组为阴性对照，共免疫3次，每次间隔2周，BCG组仅初免时皮下免疫1次。1免后每周，以原核表达纯化的重组MPB64-Ag85B-ESAT-6蛋白和牛分枝杆菌PPD为包被抗原，以间接ELISA方法检测血清IgG水平及lgG亚类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。