查询词典 practical chemistry

This study is valuable in both theoretical and practical aspects of sampling in analytical chemistry.

此项研究对于分析取样理论和应用具有重要价值。

New type of water chemistry for utility drum boiler and its principle and characteristic Two kinds of water chemistry's main principle and characteristic are detailedly analyzed. Against the problem of high eroding speed, high Fe content in feed water and boiler water, high scaling speed, short chemical cleaning interval, needing poisonous chemical deoxidant, etc for drum boiler's deoxidization water chemistry and difficulty of using oxidation water chemistry, a new type of water chemistry is put forward on the basis of analyzing the characteristic of whole power station's water steam cycle system, principle of two kinds of water chemistry and their practical effect in every cycle stage. Considering two water chemistry's merit, a new water chemistry called Limited Oxidation Water Chemistry is put forward, which is a local slight oxidization no-deoxidant water chemistry. And the proposed method's principle, control parameter, applying condition, start-lay up and emergency measures are initially calculated and analyzed.

三、新型汽包炉水化学工况的提出及其原理和特点详细分析了国内外现行两大类水化学工况处理的核心原理和特点，针对现行汽包炉还原性水化学工况处理所存在的系统腐蚀速度相对较大、给水和炉水铁浓度高、锅炉结垢速度快、机组酸洗间隔短、无法避免有毒化学除氧剂的使用以及氧化性水化学工况在汽包炉机组上应用的困难等问题，在详细分析电站整个水蒸汽循环系统的特点、两类水工况处理的原理和对循环中各段处理的实际效果等的基础上，综合两者的优点，提出了一种新型的局部轻微氧化性无除氧剂汽包炉水化学工况－"汽包炉有限氧化性水化学工况"处理原理，并初步计算、分析和确定了该种新型水化学工况的主要工艺控制参数、应用条件、启停与紧急情况处理等。

And also metal material's corrosion form and method of anticorrosion are analyzed. The review still includes water chemistry's function, principle, type and characteristic in utility boiler. And the dissertation's studying direction, content and method are determined against the current existing problem of water chemistry of utility boiler. 2. High temperature potential-pH equilibrium diagram's application and high temperature solution's practical pH calculation The application method of high temperature potential-pH equilibrium diagram and solution's practical pH at high temperature are analyzed and calculated.

本文所做的主要研究工作有：一、火力发电站热力系统防腐综述及论文研究方向与内容在查阅大量国内外文献和资料，并结合多年来工作和研究经验的基础上，对火力发电站热力系统的组成、工作环境、常用金属材料、常见腐蚀形态、常用腐蚀控制方法以及电站锅炉水化学工况的作用、原理、类型与特点等作了全面深入的分析和总结，并针对目前电站锅炉水化学工况应用中存在的问题，提出了本文的研究方向、内容和方法。

This thesis is based on former studies made by our team. Combining with practical conditions, the thesis selects proper basis sets. Applicable and credible quantum chemical calculation methods were adopted to calculate structural optimization, net atomic charge, orbit energy, etc. for a series of compounds against parasite fasciola hepatica according to quantum chemistry theory.

本论文在课题组以前的研究工作基础上，选取应用性好、可靠性强的量子化学计算方法，并结合实际情况选择合适的基组，从量子化学理论角度出发，对于合成的抗肝片吸虫系列化合物进行了结构优化、原子净电荷、前线轨道分布等量化计算。

This article reviewed the development of the studies on nanometer Prussian blue in electroanalytic chemistry in recent years, including its properties, preparation, modification on electrode as well as the practical applications in electroanalytic chemistry.

该文评述了近年来国内外对纳米尺度PB在电分析化学领域中的应用进展，含纳米PB的基本特性、制备方法、电极固定，以及在电分析化学中的应用。

Teaching and experiment of physical chemistry can train scientific thought means of undergraduate and improve their ability on putting forward, analyzing and settling questions. Students can settle the practical problems in the pharmic production and research after they have mastered theoretical knowledge of physical chemistry interrelation to pharmacy.

培养学生的科学思维方法及提出问题、研究问题、分析问题的能力，培养他们获取知识并用来解决实际问题的能力，并能应用所学的理论知识解决药物生产、研究中的实际问题，从而掌握从事药学工作必须的物理化学方面的知识。

The manner faithful, sincere, good, is honest* Has accepts the new thing and adapts the new environment ability, the aspect of knowledge is broad, also can bear hardships and stand hard work, has the very big potential to be possible to dig* Dares to meet the challenge, facing reality; Works, is quickly rigorous* Is professional practical and the good team cooperation spirit, rich affinityIn four years, the system study chemistry aspect basic theory and the correlation project technical knowledge, has studied the economic The management study and the accounting and so on the management class theory knowledge, has studied independently the homepage manufacture and the network maintenance and the management knowledge, also has obtained the computer and English aspect national level certificate, obtained the applied chemistry and business management double bachelor the degree, has enriched own aspect of knowledge, simultaneously also obtains the basic research aspect thought and the experimental training, has the good scientific accomplishment, the chemical elementary operation eo skill and in the economical management and so on the various skill Studies for the purpose of application, through university's study, I may be engaged in the light industry, the medicine, the light industry product production profession and the design research department, the management foreign trade department, and other management control sections Certainly, university's education aims at the education for all-around development, so long as the company need, I firmly obey the company the arrangement, because I believe the company "person its material" servant environment In the company leaders and under the colleagues concern instruction, I can do one's best and splendidly complete the task which the company arranges "The honest code of honor" is my motto;"Strives constantly for self-improvement" is my struggle power;"Does a line, loves a line, drills line, a fine line" is my life manner If Mongolia hires, settledly assiduously works, not let people downsStill is perhaps immature but actually longs for the superego scholar, sincere hope your reply Prosperously wishes your firm to be developed, progresses day by day!

方式忠实，恳切，好，是诚实的*有接受新事和适应新环境能力，知识的方面是宽广的，能还负担困难并且站立坚苦工作，有非常大潜力是可能开掘*胆敢接受挑战，面对现实；工作，迅速是严谨的*是专业实用和好队合作精神、富有的亲合力在四年，系统研究化学方面基本的理论和交互作用项目技术知识，学习了经济管理研究和会计等等管理类理论知识，独立地学习了主页制造和网络维护和管理知识，并且获得了计算机并且英国方面全国平实证明，被获得应用的化学和业务管理双学士程度，丰富拥有知识的方面，并且同时获得基础研究方面被认为并且实验性训练，有好科学成就，化工基本的操作eo 技巧和在经济管理等等各种各样的技巧研究为应用的目的，通过大学的研究，我也许一定订婚轻工业、医学、轻工业产品生产行业和设计研究部门、管理对外贸易部门，和其它管理控制段，大学的教育瞄准教育为全能发展，只要公司需要，我牢固地服从公司安排，因为我相信公司&人它的物质&仆人环境在公司领导和在同事之下有关指示，我可能做某人最佳和精采地完成公司安排&荣誉诚实的代码&是我的座右铭的任务；&力争self-improvement&经常是我的奋斗力量；&做线，爱线，操练线，一线细线& settledly 勤勉地是我的生活方式如果蒙古聘用，工作，不是让下来仍然是或许发育未全的但实际上渴望superego 学者的人，您的回复兴旺祝愿您的企业被开发的恳切的希望，天天进步！

After discussing and analyzing these above conclusions, we put forward some pointed countermeasures: expedite the educational reforms, improve chemistry academic motivation of the high school students; change the concepts of education and culture in a practical way, raise and stimulate female students" chemistry academic motivation; follow the law of high school students" law of somatopsychic development, put forward innovative strategies to raise and stimulate students" chemistry academic motivation; try to rise students" chemical academic record,promote middling students optimize and poor students convert; try to alleviate the students" pressure, promote the comprehensive development of the students; make overall plans and take all factors into consideration, enhance the high school students" chemistry academic motivation all sidedly.

本研究在对以上结论讨论与分析的基础上提出了有针对性的建议：加快推进教育改革，进一步提高中学生化学学习动机；切实转变教育观念，培养和激发女生的化学学习动机；尊重中学生的身心发展规律，提出创新性的培养和激发策略；努力提高中学生化学学习成绩，促进中等生优化和差生转换；努力缓解学生压力，促进学生全面发展；统筹考虑多个因素，全面提高中学生化学学习动机。

The result shows that it is practical to implement project learning in microscale chemistry for our preservice chemistry teachers.

初步研究结果表明，在高师化学专业开展微型化学实验研究型课程的实践是可行的。

Besides, the set of chemistry courses among the students major in literae humaniores and social science bears practical meanings to cultivate their scientific quality, and master useful chemistry knowledge both in daily life and social decision-makings.

而在人文社科专业的学生中开设化学类的素质教育课程对培养其科学素养，掌握日常生活及参与社会决策中必不可少的有用化学知识具有实际意义。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷