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It was investigated how to increase the yield and purity of tannin, flavone and oligoprocyanidms from the root and stalk of sanguisorba, and the stability of polyphenols from sanguisorba was studied, too. The chemical constitutes of sanguisorba were analyzed, the conditions on extracting tannin, flavone and oligoprocyanidins from sanguisorba by general lixiviating process and ultrasonic wave were optimize. The flavone and oligoprocyanidins were separated from sanguisorba and purified. The stability of polyphenol from sanguisorba was studied and the chemical structure of the products was analyzed.

本论文以地榆根茎为原料，对如何提高其主要活性成分鞣质、黄酮类物质以及低聚原花青素得率和纯度以及地榆多酚的稳定性进行了探讨；主要分析了地榆中化学成分，常规浸提和超声波浸提对地榆根茎中鞣质、黄酮类以及低聚原花青素提取条件的优化，地榆根中黄酮类和低聚原花青素的分离纯化，地榆多酚稳定性能以及产品的初步化学结构分析。

Obviously, the chlorinating agents enhanced the volatilization of heavy metals, while sulfur compounds and solid adsorbents changed the evaporation rate in various forms, which may be related to their own chemical reactions and the chemical nature in the high temperature treatment process.

其中氯化剂增强了重金属的挥发特性，而加入硫化合物和固体吸附剂后重金属的挥发特性出现各种形式的变化，这可能与其受热过程中的化学反应及其本身的化学性质有关。

With teaching process of synthetic ammonia of chemical technology as an example,the relation between physical chemistry and chemical technology was revealed .

以化学工艺学中合成氨的教学过程为例，揭示了物理化学与化学工艺学这两门学科的内在联

From the above instructions can see, chemical composition of barite powder and the chemical composition of Precipitation Barium sulphate is same, low content,But barite powder production process is simple,low cost.

从以上说明可以看出，重晶石粉和沉淀硫酸钡的化学成分是相同的，含量稍低，但是重晶石粉生产工艺简单，成本低。

Our customer base includes Guangzhou, PSA's ports, Nansha Port, Sinotrans Guangdong, Guangzhou South Railway Station, Guangzhou Baiyun International Airport's air cargo company, Guangzhou Shuangqiaoshan shares, Guangzhou Libang paint, the doors BU Swire Qiyou, Guangzhou Blue Moon biotechnology companies, DuPont Shenzhen, Dongguan, Samsung, LG Chemical Co., Nestle Dongguan, Dongguan Jiu Long Paper, Akzo Nobel Co., Sinopec Guangzhou Branch, the U.S. special Chemical, Guangzhou Hung Jen Group, Formosa Plastics Group, Foshan Kohler, the South China Sea Asia Aluminum, steel Hengda Maoming, Guangzhou Power Station Group, Guangdong, even the power plant in Guangdong, Vinda Paper Ltd., South Li Kam mind Food Co., Ltd., Guangzhou Blonde Technologies AG, Guangzhou Colgate, Guangzhou Pharmaceutical Group in a medicine, the Guangzhou Nansha Longsha company, good for Chemicals Limited, and so a large number of well-known enterprises, the main company Sales and service delivery METTLER TOLEDO - United States Weighing products are: Truck, Floor, hook scales, bench, explosion-proof Weighing; weighing process with the weighing module materials, instruments, laboratory and industrial electronic scales , And other analytical instruments.

我们的客户群包括广州港务集团属下各港口、南沙港、广东外运、广州铁路南站、广州白云国际机场航空货运公司、广州双桥股份、广州立邦涂料、卜内门太古漆油、广州蓝月亮生物工程公司、深圳杜邦、东莞三星、LG化学公司、东莞雀巢、东莞玖龙纸业、阿克苏诺贝尔公司、中国石化广州分公司、安美特化学、广州宏仁集团、台塑集团、佛山科勒、南海亚洲铝业、茂名恒大钢铁、广州发电厂集团、广东粤连电厂、维达纸业有限公司、南方李锦记食品有限公司、广州金发科技股份公司、广州高露洁、广州广药集团中一药业、广州南沙龙沙公司、好来化工有限公司等一大批著名企业，我公司主要销售和提供服务的梅特勒-托利多衡器产品有：汽车衡、平台秤、吊钩秤、台秤、防爆衡器；过程称重用的称重模块料、仪表；实验室及工业用的电子天平、分析仪器等。

It plays an important part in petroleum chemical safe production invent and engineering applications, and has advantage in the machine design of oil drill extraction, spin engine and chemical process mechanism.

在石油石化机械产品开发、工程应用等方面发挥着重要作用，已在石油钻采机械设计、旋流机械、化工过程机械方面形成优势。

According to chemical reaction in forming elastic grinding material this paper analyzes and discusses chemical balance in controlling the reaction and proposes prescription testing method and technology process in forming material.

基于弹性磨具材料生成过程的化学反应，分析讨论了控制反应过程的化学平衡问题，根据实验提出了弹性磨具材料配方试验的基本方法和生产工艺过程。

Chemical Milling hyperbolic face technology uses a chemical reduction process to selectively remove unwanted material, and then precise thickness control.

化学铣双曲线面对技术采用化学还原过程，有选择地去除有害物质，然后精确的厚度控制。

The stability of the highest, the maximum ball Chemical Milling hyperbolic face technology uses a chemical reduction process to selectively remove unwanted material, and then precise thickness control.

最高，最大球的稳定性化学铣双曲线面对技术采用化学还原过程，有选择地去除有害物质，然后精确的厚度控制。

It is concluded that the heap leaching process is a dynamic one with multiphase chemical reactions in which the leaching-rate of target metals is dependent on the rate of the chemical dissolution as well as the diffusion of the reactants and resultants.

分析了溶浸剂的作用机理，认为堆浸浸出过程是一个多相反应动力学过程，浸出速度与溶解化学反应速度、反应物和生成物的扩散速度等因素有关。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。