查询词典 chemical

The Company's advanced technology and equipment, detection means complete, currently has a large IF Elbow push system machine, large R bender, metal links extrusion hydraulic press, stainless steel elbow hydraulic extrusion machine, 2000T hydraulic press table big job and 1000T, 500T, etc. Four-column hydraulic press and high-power resistance furnace heat treatment, shot blasting machine, such as noisy jet pipe production equipment, is equipped with a universal tensile testing machine, chemical analysis instruments, non-destructive testing equipment, spark photoelectric read the whole spectrum, such as test equipment and test equipment , the Company has a large number of pipe fittings for many years engaged in the manufacture of engineering and technical personnel and skilled workers, with process design, manufacturing, welding, heat treatment, chemical cleaning, and product inspection and testing of the ability to undertake a variety of bend of high, medium , low pressure and high temperature and low-temperature pipe fittings manufacturing business.

本公司工艺装备先进，检测手段齐全，目前拥有大型中频弯头推制机、大R弯管机、金属三通挤压液压机、不锈钢弯头挤压液压机、2000T大工作台面液压机及1000T、500T等四柱液压机和大功率热处理电阻炉、喷吵抛丸机械等管件生产专用设备，配备了万能材料拉力试验机、化学分析仪器、无损检测仪器、火花光电全读光谱仪器等检验和试验设备，本公司有一大批多年从事管件制造的工程技术人员和技术工人，具有工艺设计、制造、焊接、热处理、化学清洗及产品检验和试验的能力，能承接各种规格的弯头的高、中、低压及中高温和低温管件制造业务。

The results indicate that the synthesized sphene has a good chemical durability in the aqueous solution whose pH value is 5-9, the temperature and pH of the solution have important influences to its chemical durability in 1-21 days.

结果表明，在pH为5~9的水溶液中，合成榍石具有良好的化学稳定性，温度和pH是影响1~21 d化学稳定性的重要因素；42 d Ca(上标 2+)的浸出率比Ti(上标 4+)的浸出率高2个数量级；在90℃、pH=7下，Ca(上标 2+)和Ti(上标 4+)的42d归一化浸出率分别为3.33×10^(-3)、1.33×10^(-5)gm^(-2)d^(-1)；在25℃、pH=7下，Ca(上标 2+)和Ti(上标 2+)的42d归一化浸出率分别为1.52×10^(-3)、3.05×10^(-5)m^(-2)d^(-1)；在25℃、pH=3下，Ca(上标 2+)的42d归一化浸出率达到7.71×10^(-2)gm^(-2)d^(-1)。

Enterprises have a very well-cast spheroidal graphite, non-ferrous foundry production equipment, machining equipment and advanced analysis of physical and chemical testing equipment, can satisfy the customers of different levels of product quality and physical and chemical properties of the full range of requirements.

企业拥有十分完善的球墨铸造，有色铸造生产设备、机加工设备和先进的理化分析检测设备，能满足客户对不同等级的产品质量和理化性能的全方位要求。

A basic knowledge of microbiology, will be detected with a microscope observation of micro-organisms, medium Preparation, disinfection and sterilization, separation and purification of micro-organisms, bacteria counting method A chemical analysis of the theoretical knowledge and can use chemical analysis methods and equipment of the components of material analysis Master fermentation process principles, understanding of beer, liquor, fermentation production technology Master protein related knowledge, PAGE gel electrophoresis technology, high-speed centrifugal Genetic engineering master the basic theory of knowledge, the extraction and purification of genes, PCR principle, gene recombination technology Master of the basic theoretical knowledge, the immobilized enzyme, the enzyme preparation Application Master of animal and plant tissue culture techniques of experimental steps studied experimental apparatus: Balance (scales, electronic scales, Analytical Balance), or acidity, spectrophotometer, liquid gas chromatography, acid-base titration apparatus, microscopes, centrifuges, ultrasonic cleaning, constant temperature oscillation incubator, super-clean table, steam sterilization pot, the pot constant temperature water bath, PAGE device apparatus, oven, fermenter, such as PCR instrument.

具备微生物理论基础知识，会用显微镜检测观察微生物，培养基的制备、消毒与灭菌，分离与纯化微生物，细菌的计数法具备分析化学的理论知识，能运用化学分析和仪器分析方法对物质的组分进行分析掌握发酵工艺原理，了解啤酒、白酒、发酵生产工艺掌握蛋白质相关知识，PAGE凝胶电泳技术，高速离心掌握基因工程的基本理论知识，基因的提取和纯化，PCR技术原理，基因重组技术掌握酶的基本理论知识，酶的固定化方法，酶制剂的应用掌握动植物组织培养技术的实验步骤学过的实验仪器：天平（台天平，电子天平，分析天平）、酸度计、分光光度计、液气相色谱仪，酸碱滴定仪器，显微镜，离心机，超声波清洗器、恒温振荡培养箱、超净工作台，蒸气灭菌锅、恒温水浴锅，PAGE电泳装置仪器、干燥箱、发酵罐、PCR扩增仪等。

A description should be provided of the investigational product substance including the chemical and/or structural formula(e, and a brief summary should be given of the relevant physical, chemical, and pharmaceutical properties.

应该提供产品描述，并提供相关物理，化学和药学特征的简短总结。

The principals and features of UV and four chemical disinfection processes were introduced in this paper, and it was pointed out that UV disinfection may become a succedaneum of traditional chemical disinfection methods.

介绍了四种常用的化学消毒法和紫外线消毒法在应用中的原理及特点，指出紫外线消毒法可能取代传统的化学消毒法并且具有广阔的应用前景。

This innovative DNA-sequencing technology was invented by Dr. Jingyue Ju, professor of Chemical Engineering and head of DNA Sequencing and Chemical Biology at the Judith P. Sulzberger, M.D.

这项革命性的DNA测序技术是由化学工程教授Jingyue Ju博士和哥伦比亚大学哥伦比亚基因组中心DNA测序和生物化学系主任Judith P。

Experts, the expansion of the chemical agent called motilin cells, hormones are chemical substances, commonly used fruits and vegetables have a kiwi, watermelon, strawberries, cherries, tomatoes, and some vegetable farmers in the cucumber, summer squash and other vegetables used in this way to make fruits and vegetables-cell non-normal enlargement, head of fruits and vegetables grown up than the normal 1-2 times as large, the shape become more exotic, such as tomatoes, long tip, strawberries were piriform, cucumber apex hypertrophy with pedicle sharp contrast and so on.

专家介绍，膨大剂的化学名称叫细胞集动素，属于激素类化学物质，常用的果蔬有猕猴桃、西瓜、草莓、樱桃、西红柿等，有些菜农在黄瓜、西葫芦等蔬菜上使用，以此方法使果蔬细胞非正常膨大，个头比正常长大的果蔬大1—2倍，形状变得比较奇特，如西红柿长尖、草莓呈梨状，黄瓜尖部肥大与蒂部形成鲜明对比等。

Chemical heat treatment by changing the workpiece surface chemical composition, structure and properties of metal heat treatment process.

化学热处理是通过改变工件表层化学成分、组织和性能的金属热处理工艺。

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。