查询词典 basic carbonate

When other alcohols is as the raw material, the yield ofaim product (diethyl carbonate, n-butylethyl carbonate, sec-butylethyl carbonate,benzylethylcarbonate and phenethyl ethyl carbonate) was 67.3, 52.3, 56.7, 37.6 and32.8％.

考察了此合成方法适用的普遍性，初步得出了此电合成方法适用于底物为伯醇和仲醇类，而不适用于叔醇和苯酚的反应。

There were 8 groups and each groups had 8 cows in the experiment.groups A was the positive group, be feeded basic dietary and in the normal environment; groups B was basic dietary and in the improved environment ; Group C was feeded with basic dietary and NaHCO_3(120g/d/head) and Mg0(50g/d/head) and KCl(180g/d/head), in the environment with no spray and no wind; Group I is feeded with basic dietary and NaHCO_3 (120g/d/head) and MgO(50g/d/head) and KC1 (180g/d/head) and in the another environment with spray and wind; Group E was feeded,with basic dietary and traditional druggery additive in the environment with no spray and no wind; Group F was feeded with basic dietary and traditional druggery additive in the environment with spray and wind;Group G was feeded with basic dietary and NaHCO_3 (120g/d/head) and MgO(50g/d/head) and KCl (180g/d/head) and traditional druggery additive in the environment with no spray and wind; Group H was feeded with basic dietary and NaHCO_3( 120g/d/head ) and Mg0(50g/d/head) and KCl(180g/d/head) and traditional druggery additive in the environment with spray and wind.

试验分8个处理，每个处理8头奶牛，A处理为对照组，喂以基础日粮，处于常规环境(未喷雾，未机械吹风，下同)，B组为喂以基础日粮，处于改善环境：C组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)，处于常规环境：D组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)，处于改善环境；E组为基础日粮+中草药添加剂组，处于常规环境；F组为基础日粮+中草药添加剂组，处于改善环境；G组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)+中草药添加剂组，处于常规环境；H组为基础日粮+NaHCO_3(120克/头。日)+MgO(50克/头。日)+KCl(180克/头。日)+中草药添加剂组，处于改善环境。

Nanocrystal basic zinc carbonate was a new type of basic zinc carbonate.It could be used as skin protective agent in the pharmaceutical industry.It also could be used as basic raw materials in the production of cosmetics.

纳米微晶碱式碳酸锌是一种新型的碱式碳酸锌，在医药行业可用作皮肤保护剂，在化妆品生产中用作基础原料。

The main work and innovation1 In general , a image compression method has different effect to different image . Some are fit for image which has much high frequency . Some are fit for image which has much low frequency .This paper analysis the applicability of fractal algorithm . In this dissertation , an improved algorithum is given . The basic algorithum without eight change and the joint use of quantitative coding , The compression ratio and PSNR can be adjusted , and it can get more quickly speed of coding .2 To a group of exact fractal code , the decoding image can be any resolution .With this characteristic ,choose the proper domain block and range block,this paper get an algorithum which can get higher decoding PSNR and speed than the basic fractal algorithum.3 Give a new method to calculate the scale factor . The calculation of basic algorithum is complex and enormous . The factor of scale is an important variable of the basic algorithm. Now there are two methods to calculate the factor of scale .A new method was given to calculate the factor of scale. The calculation load and complexity are reduced by the new method. Compared with the basic algorithm , the method can reduce coding time.4 The basic fractal algorithum is based on the Collage theorem and contraction mapping theorem . A mathematic model based on basic fractal algorithum is given .

本文的主要工作及创新点主要包括以下几点：1一般情况下，一种图像压缩的方法对不同特点的图像，压缩效果会有所不同，本文利用分形压缩编码对不同特点的图像进行编码，分析了分形编码对不同图像的编码适用性，利用去掉8种变换的分形编码算法与简单的均匀量化编码方案相结合，得到了一种可以调节压缩比与解码质量的分形编码方案，该提高编码速度6倍以上。2分形编码的特点之一是分形解码的分辨率无关性，即对于一组分形编码可以将其解码到任意分辨率下，本文利用分形编码的这一特点，结合不同的量化编码方案，选择合适的定义域块与值域块及适当的编解码分辨率，得到了一种提高解码质量，编码速度提高12倍以上的加速算法。3比例因子是基本分形算法中的一个重要变量，目前有两种计算比例因子的方法，文中给出了一种新的求比例因子的方法，该方法简化了求比例因子的计算，从整体上减小了基本分形算法的计算量，简化了算法4分形压缩的数学基础是不动点定理与拼贴定理，本文根据基本的自动分形编码方法，建立数学模型对其进行推导，得到了用普通数学的极限理论解释分形编码的数学表达式，从而对由基本分形编码得到的解码图像中的像素点的值给出了确定的表达式。

Evidence suggests that 1 under more stable stratification, the basic flow, if moving faster at low and high levels (particularly in the presence of jets there), allows a resulting meso-β unsteady wave to propagate eastward with respect to basic flow and even at greater velocity compared with it; 2 vertical windspeed shear of basic flow causes instabilities of the TWT perturbation; 3 considering the second derivative of basic-flow wind with respect to z (denoted by zz≠ 0 which is simply given as β* hereafter) the expression for the phase velocity of vortex Rossby wave is obtained, which is unidirectional in propagation with respect to basic flow; 4 VRoW has its physical origin from β*, i.e., from z-varying heterogeneities of y-direction averaged vorticity of the basic flow field; 5 VRoW phase velocity is associated with zonal wave number k, its energy is dispersive and the group velocity exists in the x direction; 6 when windspeed meets the condition of β*, TWT disturbance instability may be that of mixed VRoW and gravity wave; 7 if basic flow is subject to linear shear but does not meet the condition of β*, the TWT instability is that of inertia-gravity wave.

在大气层结比较稳定的情况下，如果基本气流在低层和高层较大(有可能存在低空急流和高空急流)，此时产生的β中尺度不稳定扰动相对于基流向东传播，甚至于快速向东传播。基本气流在垂直方向上的风速切变对于中尺度横波型的扰动起着不稳定的作用。如果考虑基流的二次切变，可以得到涡旋Rossby波的相速度表达式，涡旋Rossby波相对于基本气流是单向传播的。涡旋Rossby波产生的物理根源是基本流场的风速二次切变，亦即基本流场y方向的平均涡度在空间z方向上的不均匀所致。涡旋Rossby波的相速度与纬向波数也有关，它的能量是频散的，其在纬向x方向也存在群速度。在基本流场的风速存在二次切变时，横波型不稳定可能是混合的涡旋Rossby重力波的不稳定；而在基本流场的风速仅仅存在线性切变，不存在二次切变时，横波型扰动的不稳定则是重力惯性波的不稳定。

Many data and discussions about carbonate rock dissolution in CO2 solution have been published. In this paper, special simulation experiments were carried out in order to understand the dissolution behaviors of carbonate rocks in organic acid and H2S solution. The results show that, as the temperature rises from 20℃ to 200℃, the dissolution rate of carbonate rock in organic acid increases with temperature below 90℃ and decreases above 90℃.

CO2对碳酸盐岩储层的溶蚀作用已有不少学者进行了研究，本文则以一个全新的模拟实验方式对不同类型碳酸盐岩在有机酸和H2S水溶液中的相对溶蚀能力进行了研究，结果发现随温度从常温升高至200℃，有机酸对碳酸盐岩的溶蚀能力由弱变强再变弱，在90℃左右溶蚀能力最强。

Because nanometer barium carbonate has more excellent qualities than ordinary barium carbonate, it has been one of the important directions of the barium carbonate industry.

纳米BaCO_3具有不同于常规BaCO_3的优良性能，因此，纳米是BaCO_3制备工艺发展的一个重要方向。

Production of high purity level of fluorescence strontium carbonate, electronic-high purity strontium carbonate, barium carbonate, such as high purity level of electronic materials in powder technically in a peer-leading position, its level of quality has been engaged in domestic and foreign professional Long Lasting luminous powder, PTC, NTC thermistor, such as electronic components manufacturer of the high degree of recognition and trust and become their long-term, stable supplier.

生产的荧光级高纯碳酸锶、电子级高纯碳酸锶、电子级高纯碳酸钡等粉体材料在技术上处于同行领先地位，其质量水平受到了国内外专业从事长余辉发光粉，PTC、NTC等热敏电阻电子元件生产厂家的高度认同和信赖，并成为他们长期的，稳定的供应商。

TheJiyang depression located in paleomonsoon climate zone in the period of the sahejieformation sedimentation, the wet and hot climate made ancient lake become deeperwater, enhanced stratification, reduced primary productivity of plankton, decreasingsedimentary velocity of carbonate, increasing sedimentary velocity of clay, fortifiedreductibility on certain degree, and then would be available for development of blackshale, dark shale and oil shale; In the contrast, the cold and dry climate lead ancientlake to shallower water, subdued stratification, increaser primary productivity ofplankton, enhancive sedimentary velocity of aphanitic carbonate, decreasedsedimentary velocity of clay, and then would be available for development calciteshale, calcite laminar shale, calcite mudstone, shaly carbonate rock, even laminarcarbonate or dolomite rock.

济阳坳陷在古近系沙河街组沉积期属于古季风气候带，在湿热的气候条件下古湖水加深，分层性增强，浮游生物的古生产力降低，隐晶碳酸盐的沉淀速率变小，粘土沉积速率加快，还原性一定程度上有所加强，有利于黑页岩、油页岩和暗色泥岩的形成：而相对干冷气候下，古湖水变浅，分层性减弱，浮游生物的古生产力增高，隐晶碳酸盐的沉积速率变大，粘土的沉积速率减慢，有利于钙质页岩、钙质纹层页岩、钙质泥岩、泥灰岩甚至纹层状碳酸盐岩、灰岩的发育。

In order to obtain the thermodynamic data of the synthesis of ethyl methyl carbonate from dimethyl carbonate and diethyl carbonate, the standard molar enthalpies of formation, Gibbs free energy and molar heat capacity under constant pressure are calculated by the method of Benson group contributions.

为了得到碳酸二甲酯和碳酸二乙酯酯交换合成碳酸甲乙酯反应的热力学数据，用Benson基团贡献法计算了相关物质的标准摩尔生成焓、吉布斯自由能和摩尔定压热容。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼