查询词典 practical

B.A.Suchomlinski , the former Soviet Union's education theoretician and practician, who advanced a lot of education thought having the practical significance according to the requirements of society at that time and his many years of practical experience.

瓦·阿·苏霍姆林斯基，前苏联当代教育理论家与实践家，他根据当时社会的要求和多年的实践经验提出了很多具有现实意义的教育思想。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

The special thing about Liu's art is that his works are not expressions of general emotions (what is commonly known as 'follow the feelings'), or graceful skills, or utilitarian interpretations of practical questions the latter is originated from France in the 18th century and its revolutionary tradition, namely political and utilitarian behaviorism tradition. French didacticism philosophers in the 18th century, just like the early renaissant civic humanists, advocated active and vibrant way of life and fought against ruminative way. They were not interested in metaphysics, and cared about practical issues—moral, mental and social--in their lives. They were confident of human future and held undoubted faith in history progress.

刘永刚的艺术的独特之处，就在于其作品中的表现性，不是一般性的情绪化的表现，不只是我们通常认为的&跟着感觉走&，也不是技巧性的优雅表现，或是对现实问题的功利性的主题解释，后者来源于18世纪的法国及法国革命传统，即政治化、功利化的行动主义传统。18世纪的法国启蒙主义哲学家，像文艺复兴早期的公民人文者一样，崇尚积极活跃的生活，不赞成沉思默想的生活，对形而上学没有兴趣，关心此时此地的人生中的实际问题——道德的、心理的、社会的问题，他们对人类的前途充满了信心，对历史的进步具有毫不怀疑的信念。

September 29, Obi Island the first leg of the classroom came to Guangzhou Tianfu Road Primary School, elected by the class more than 40 student representatives to participate in this church is rich in content and has a lively and practical significance for the daily art classes, Over the 2-hour course, students learned the use of these images in magazines, how to make better use of color, color in life, such as the use of practical knowledge, the classroom, the students showed great interest in and listened carefully as Obi-island senior lecturer in graphic art design Xie Sisi explain.

9月29日，奥比岛大课堂第一站来到了广州市天府路小学，由各班级选举出来的40多名学生代表，参与了此堂内容丰富生动且具有日常实用意义的美术课，在长达2小时的课程中，学生们学到了图像在杂志当中的运用、如何更好地运用颜色、色彩在生活中的运用等实用性知识，课堂中，学生们表现出极大的兴趣，并认真听取了担任奥比岛高级美术设计谢思思讲师的生动讲解。

The thought of style of study of this kind of be practical and realistic, make he was the formation of the course of thought of be practical and realistic of open up of Chinese revolution viatic and party to make contribution.

这种实事求是的学风思想，使他为中国革命道路的开辟和党的实事求是思想路线的形成做出了贡献。

I, Pencil, seemingly simple though I am, offer the miracle of my creation as testimony that this is a practical faith, as practical as the sun, the rain, a cedar tree, the good earth.

我，看起来再简单不过的一支铅笔，以我奇迹般的诞生过程证明了，这是一种实在可行的信念，就像太阳、雨雪、雪松树等等一切美好的事物一样实在而可信。

There appears to have been considerable cross-fertilisation between rotary compressors and rotary engines; but a configuration that made a practical compressor was not necessarily a practical steam engine.

有似乎已相当交流之间的旋转压缩机和转子发动机，但配置作出了切实压缩机不一定是一种实用的蒸汽机。

Network virtual property is that the property although only exists in network,there is practical social relationship on it,and which requires to be protected by laws,therefore those property only existing in network,disappearing when without network circumstance,and not having relationship with practical society will be eliminated.

网络虚拟财产只是那些虽存在于网络环境中，但在其上产生了现实的社会关系，需要法律予以调整和保护的财产，从而排除了那些只存在于网络环境，但随网络环境而生灭，未与现实社会发生联系的虚拟物品。

Teacher's practical knowledge means the knowledge which the teacher cumulates and applies in the teaching practice after he or she discovers and apperceives the implications of practice and experience, combined his or her own life experience and personal meaning of experience by the ways of experiencing, pondering and comprehending in the daily practical teaching situation.

教师实践性知识是指教师在具体的日常教育教学实践情境中，通过体验、沉思、感悟等方式，发现和洞察自身的实践和经验之中的意蕴，并融合自身的生活经验以及个人所赋予的经验意义，逐渐积累而成的运用于教育教学实践中的知识。

For the first stage, with the help of adjusting curriculum setting, castigating teaching outlines and using suitable modern teaching technology, it is expected to finish the regular teaching task of four years in a three-year period. As for the second stage, in order to improve the students knowledge structure and ability structure, measures should be taken to improve their professional practical ability. The method for achieving that purpose is to give the students intensified training for practical skills and technologydeveloping in the fields of typical production, equipments and craftwork task in the enterprises.

在第一阶段，通过调整课程设置，修订教学大纲，合理运用现代教育技术，用三年的时间完成四年制中专的常规教学任务；在第二阶段，围绕企业中典型的生产、设备和工艺课题，以提高专业实践能力为中心，对学生进行实践技能和技术开发能力的强化训练，有效地促进学生知识结构和能力结构的不断优化。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。