<span id="ChDivSummary" name="ChDivSummary" class="abstract-text">冲击块作为是旋转冲击机构中的核心零件,其性能直接影响着气板机的输出扭矩和使用寿命。本文首先简单介绍冲击结构工作原理以及冲击块受力情况,结合动态扭矩测试仪的运用,采用有限元分析法,对冲击块优化设计方案进行筛选,以增大气扳机输出扭矩并降低冲击块的应力。</span>
在应用技术型人才培养目标的背景下,迫切需要对传统的大学物理教学模式进行改革,笔者结合《大学物理》教学经验及课程问卷调查,探讨了在课程中采用分专业分层次教学及基于MATLAB的数字化教学模式,从而逐步实现应用型人才培养质量的提升.
本文针对当前会计档案管理存在的主要问题,提出了加强会计档案管理的有效措施.要完善会计档案管理制度;提高对会计档案的重视程度;建立信息管理平台,实现会计档案管理信息化;做好培训工作,切实提高会计档案管理人员的综合素质;推进会计档案基础工作规范化.
随着社会的不断发展，公共图书馆已经成了学习型社会的一个重要组成部分，更是全民素质教育的重要场所。当然，要想充分发挥公共图书馆的功能，必须拥有一支优秀有馆员队伍，由于图书管理员的素质直接影响着现代文化的进程。因此，为了打造一流服务的公共图书馆，本文首先分析了转型时期公共图书馆馆员的作用，然后探讨了提高转型时期公共图书馆馆员综合素质的基本措施。
Fe3 O4 nanoparticles were prepared by co-precipitation and combustion method .X-ray diffraction instrument ,scanning electron microscopy ,transmission electron microscopy ,UV visible spectroscopy and vibrating sample magnetometer were used to study the physical properties of Fe 3 O4 nanopartides .The results show that Fe3 O4 has single magnetite mineral phases ,homogeneous distuibuted sizes ,and superaramagnetism .Under the normal temperature ,the saturation magnetization of Fe3 O4 nanoparticles is as high as 63 .5 emu/g .
This paper shows the problems of "Theoretical Mechanics" course survey, and then explores how to improve the teaching quality by using the diversified teaching-model.
小接地电流系统中,发生单相接地故障,应迅速查找故障点,争取在未发展成两相接地短路故障前,将其切除,以免扩大事故。单相接地故障产生原因多、现象复杂、危害大,可根据具体情况对故障进行判断,并采取切实可行的处理方法。论述了小接地电流系统发生单相接地故障的原因、产生危害和主要现象,对各种故障现象的区分判断,讲明了具体的查找处理方法,最后讲述了查找处理过程中的注意事项和几种特殊情况,在判断、查找处理时能够及时准确,确保系统安全稳定运行。
Archives how to arrange Accounting electronic file how to arrange Electronic file how to protect According to the actual situation of the unit,through the above problems,so as to achieve the electronic archives arrangement and protection.Let the electronic archives operation more convenient.
This paper shows the problems of Method of Mathematical Physics course survey, and then explores how to improve the teaching quality by using the diversified teaching-model.
This paper shows the numerical calculation and simulation of "mathematical physics equation" based on MATLAB software,then to improve the visual teaching through the physical meaning of equations by analyzing the resulting image.
从大学物理教学现状出发,把MATLAB应用到大学物理教学中,从而提高大学物理教学质量。
本文利用MATLAB软件对《电磁学》中经典实例模型进行可视化仿真，使得物理求解与物理模型得以清晰直观的呈现，从而提高电磁学教学质量。
<正>初中地理作为一门重要的基础学科,对社会的发展起着重要的作用,但在目前的大气候条件下,中学地理却出现了学校不愿管、教师不愿教、学生不愿学的状况。如何摆脱困境,再现地理教学的春天呢?让学生喜欢地理,自觉地学好地理是至关重要的。而要达到这种境界,教师就必须培养学生学习地理的兴趣。所谓兴趣是指一个人经常趋向于认识、掌握某种事物,力求参与某项活动,并具有积极情绪色彩的心理倾向。正如教育家孔子所言"知
From the emotional point of view, speech expressive lable has been studied , and the paper proposed a new speech expressive lable scale. Experiments show that, the speech expressive lable scale save time, the results could better reflect the expressiveness of speech, and consistency of test results have improved significantly.
随着计算机技术的发展,计算机业务已由基于单机的数学运算、文件处理,发展到基于企业的内、外网及互联网的信息共享和业务处理。在信息处理能力、数据流通能力提高的同时,基于网络连接的安全问题也日益突出。不论是外网还是内网的网络连接都会受到安全问题的困扰。
A method of building dynamic mathematic model of automatic hydraulic take-up equipment is introduced,and the tension stability of equipment designed base on the method is verified.
主要参(系)数的选取、物料防滚滑措施的采用、软启动装置的选用、防逆转措施的采用等,是大倾角带式输送机设计中的要点。
在水泵的设计和试验中发现,水泵效率和允许吸上真空高度是互相制约的,但它们之间有一个最佳组合,而实际设计中往往达不到到最佳组合,因此合理选择设计参数,尽可能提高水泵效率的同时适当提高泵的允许吸上真空高度是水泵设计的关键.
This paper introduces the calculation of the conveyor belt tension,the role of tensioning device,type and installation of the need to consider the key factors.The selection and operation of tension units of various belt conveyors are explained in the thesis.In addition the points of attention during the installation are introduced in it.
