电子小报英文范文（精选8篇）
电子小报英文 第1篇
电子小报英文
A hobby , someone once said , is somethingyou do when you have nothing to do.That may be true,but a hobby is more
than just a way to fill some dead time.It’s really a way to express your passion for life.For me,that passion is Chinese calligraphy;for others,it may be coin collecting(numismatics),or stamp col-lecting(philately).
Today,though,there seemto be fewer callig-raphers,numismatists and philatelists.People complain that they are just too busy to waste their time on such hobbies.Of course,these are the same people who can find plenty of time to spend on their computers or mobile phones,or even watching television.The truth is,we have more leisure time than ever,but many people have lost interest in traditional hobbies because these pas-times are considered too quiet.There is no buzz.
True hobbyists do get excited about their pas-times because a little thing like a stamp can open up a whole world of knowledge and interest.Did you know,for example,that the first stamp issued in China was also a dragon?That was in1878dur-ing the Qing dynasty.And did you know that stamps can be valuable?A Swedish stamp was sold infor$2.3million.Even the newdragon stamp is now selling online for fifty times its face value.
Stamp collecting or other traditional hobbies may not be your thing,but having a hobby that you can stick with can really add to life’s enjoyment.
电子小报英文 第2篇
中国的新年英文作文
chinese new year
chinese new year is a chinese traditional festival. we also call it the spring festival. it is on lunar january 1st.
on new year’s eve, all the people sit around the desk and have a big family dinner. there are some vegetables, some fish, some meat, some fruits and some drink like juice, coke, pepsi and some nice wine. overall, this is a good and delicious dinner. after dinner, we always watch tv new year progammes. we have a wonderful evening on new year’s eve.
on the first day of the spring festival, most of people get up early and say “happy new year” to each other. for breakfast, people often eat dumplings and baozi. after breakfast, people often make many delicious foods, and children often play cards, computer games and fireworks. on the second and third day, we visit friends and relatives.
everyone is busy on chinese new year, and everyone is happy, too.
新年祝贺词
beet wiehee fer the helidaye and happineee threugheut the new year.
恭贺新禧，万事如意。
with very beet wiehee fer yeur happineee in the new year.
致以最良好的祝福，原你新年快乐幸福。
pleaee accept eur wiehee fer yeu and yeure fer a happy new year.
请接受我们对你及你全家的.美好祝福，祝你们新年快乐。
may the ceming new year bring yeu jey, leve and peace.
愿新年为你带来快乐，友爱和宁静。
wiehing yeu happineee during the helidaye and threugheut the new year.
祝节日快乐，新年幸福。
a happy new year te yeu.
恭贺新年。
eeaeene greetinge and eincere wiehee fer a bright and happy new year!
献上节日的问候与祝福,愿你拥有一个充满生机和欢乐的新年。
i weuld like te wieh yeu a jeyeue new year and expreee my hepe fer yeur happineee and geed future.
祝新年快乐，并愿你幸福吉祥，前程似锦。
may the new year bring many good things and rich blessings to you and all those you love!
愿新年带给你和你所爱的人许多美好的事物和无尽的祝福!
rich blessings for health and longevity is my special wish for you in the coming year.
祝你在新的一年里身体健康，多福多寿。
good luck, good health, hood cheer. i wish you a happy new year.
祝好运、健康、佳肴伴你度过一个快乐新年。
with best wishes for a happy new year!
祝新年快乐，并致以良好的祝福。
i hope you have a most happy and prosperous new year.
谨祝新年快乐幸福，大吉大利。
with the compliments of the season.
祝贺佳节。
may the seasons joy fill you all the year round.
愿节日的愉快伴你一生。
seasons greetings and best wishes for the new year.
祝福您，新年快乐。
please accept my seasons greetings.
请接受我节日的祝贺。
to wish you joy at this holy season. wishing every happiness will always be with you.
恭祝新年吉祥，幸福和欢乐与你同在。
good health, good luck and much happiness throughout the year.
恭祝健康、幸运，新年快乐。
may the joy and happiness around you today and always.
愿快乐幸福永伴你左右。
please accept my sincere wishes for the new year. i hope you will continue to enjoy good health.
请接受我诚挚的新年祝福，顺祝身体健康。
allow me to congratulate you on the arrival of the new year and to extend to you all my best wishes for your perfect health and lasting prosperity.
恭贺新禧，祝身体健康、事业发达。
i give you endless brand-new good wishes. please accept them as a new remembrance of our lasting friendship.
给你我无尽的新的祝福，让它们成为我们永恒友谊的新的纪念。
good luck and great success in the coming new year.
电子小报英文 第3篇
关键词：思维导图,信息技术,自主探究,主题活动
思维导图又称脑图、心智图, 属于一种放射性思维的表达, 最早兴于20世纪60年代, 由英国著名心理学家、教育家托尼·马赞所创造的一种新的思维模式, 对于全面提高和发展健全的思维品质具有非凡的价值。将思维导图应用于信息技术主题活动, 不仅可以让学生进行自主探究, 帮助学生提高理解力和记忆力, 还有利于知识的管理与建构, 形成整体的思维能力和逻辑能力, 使学习更加有目的性和针对性, 提高学习效率。
小学生对新鲜事物非常感兴趣, 对事物有了一定的理解能力, 具有从动作思维向形象思维和抽象思维逐步发展的特点, 但是对事物的理解能力还是有限, 这在信息技术课程教学中尤其显得突出。利用思维导图分析解决信息技术学习中的主题探究活动, 学生就能抓住知识的本质特征, 发现解决问题的关键, 机智灵活地解决问题。
例如, “制作电子小报”主题活动, 对于学生来说是一个难度很大的项目, 是对学生整体思维能力的考验, 因为在作品主题构思、版面设计、内容等方面都需要学生通过思考、分析、归纳、比较、规划等思维活动来完成。但是由于小学生的思维能力有限, 他们一般没有能力全部完成这些重要步骤, 大多只能应付技术层面的工作, 这样做出来的小报效果只能差强人意。如何让学生轻松地制作出优秀的作品?在教学中, 针对具体情况, 利用思维导图从如下几个方面引领学生自主探究完成电子小报的制作。
1 利用思维导图构思“电子小报”的主题, 整理想要研究的问题
主题是一个作品的灵魂, 是影响一个作品是否成功的关键因素。作品应该主题明确, 内容健康。为了在选题时能够尽快扩展自己的思路, 将学生进行分组讨论, 教师适当引导, 学生发挥想象力和创造力, 在讨论的同时去绘制思维导图, 将所有人的想法记录下来。例如, 在制作“魅力靖江”宣传小报时, 我进行了尝试, 让学生利用“思维导图”把想要研究的问题画下来, 起初学生的思路很窄, 想研究的问题也就是“靖江的由来”、“靖江的特产”、“靖江的景点”, 经过引导, 学生很快想到“长江三鲜”、“靖江的历史名人”、“名胜古迹”、“民俗文化”、“靖江新形象”等, 短短十分钟内, 学生在综合讨论交流的基础上, 绘制出的“魅力靖江”宣传小报是从“靖江的由来”、“靖江的美食”、“靖江的名胜古迹”、“民俗文化”、“历史名人”等方面来宣传的思维导图。
2 利用思维导图制定“电子小报”的制作计划
一份优秀的电子小报作品, 需要经过多个阶段才能完成。但是大多数学生对制作过程有哪些阶段以及每个阶段的具体工作是什么都不了解, 便开始盲目制作。由于没有制作计划, 只是想到哪做到哪, 临时安排, 导致每节课没有完成相应的制作任务, 进度缓慢, 难以在规定的时间内完成任务。通过绘制思维导图, 让学生自主探究出每个阶段需要完成什么工作、组内成员分工和时间进度安排, 并将想法进行整理优化, 然后画出层次清楚、条理清晰的网络结构图。这张图就将作为整个作品制作的引导工具, 指导主题活动任务的完成。
同样在“魅力靖江”电子小报制作中, 有小组对思维导图中的“靖江美食”感兴趣, 于是组内成员讨论交流, 根据组内成员特长制定相应计划, 计算机水平高的可以负责收集“长江三鲜、双鱼肉脯、蟹黄汤包、各类风味小吃”等方面的素材, 美工好的负责版面设计, 水平一般的学生可以帮忙录入文字等, 并且明确时间进度。这样, 小组内成员各司其职、各负其责, 还能起到相互监督的作用。
3 利用思维导图整理制作“电子小报”的所需素材
电子小报的制作计划和主题确定以后, 就需围绕所选主题进行搜集素材。学生根据主题画出以“所选主题”为中心点的各类素材以及获取素材的途径、方法等的思维结构图, 然后根据思维导图决定去网络搜集, 还是去图书馆搜集。
在收集“靖江美食”素材中, 例如, 蟹黄汤包的吃法, 可能配有视频更有感染力。所以, 组内成员要讨论哪些是需要文字素材, 哪些是需要图片素材或视频素材, 哪些需要去图书馆查询, 哪些可以去网络搜集等。
4 利用思维导图设计“电子小报”版块
学生遇到的最大困难是没有做好电子小报的整体规划, 一边做一边想, 将搜集到的素材粗略组合一下, 就随便地叠放在一起, 资源与资源之间缺乏联系和逻辑, 让读者看了感觉多而乱。让学生利用思维导图画出自己所能想到的版块栏目, 是板块式还是穿插式, 是横排还是竖排, 最后学生从画出的所有版面中选择一种适合自己的。
通过以上几个方面将教材每个模块的主题探究活动分成几个小主题, 利用思维导图自主探究出知识结构图, 边画边修改整理, 画出自己满意的结构图。然后选择适合自己的主题, 有计划有步骤、条理清晰地完成整个主题活动任务, 极大地培养了学生的创新思维能力。
参考文献
[1]张秀常.思维导图在信息技术教学中的案例及分析[J].浙江现代教育技术, 2008.
[2]高志军, 李海青.对思维导图在教育应用研究的调查与分析[J].中小学信息技术教育, 2009.
电子小报英文 第4篇
1.知识与技能
掌握在WORD中插入艺术字、文本框、图片的方法；掌握艺术字、文本框、图片格式的设置方法；能综合运用图片、艺术字、文本框等解决实际问题。
2.过程与方法
探求用WORD解决实际问题的方法。
3.情感态度与价值观
培养学生自主学习及协作学习的意识和能力；提高学生的人文素养。
教学流程
一、导入新课
教师引导学生：①同学们课余喜欢读哪类杂志？②到书报亭购买杂志时，什么样的杂志最能吸引你的注意？③想不想自己设计杂志封面？
二、讲授新知
①出示课件，以杂志封面为例引导学生分析组成要素，引入问题，为学生指出思考的方向。
②创设情境，利用课件向学生出示三个任务，以组为单位，每个小组选择两个任务进行制作。任务1：名片设计（规划自己的人生，为未来的自己设计名片）。任务2：贺卡设计（以母亲节为主题，设计一份贺卡送给你的母亲）。任务3：杂志封面设计（学校要创办一份校刊，请你进行封面的设计）。
③学生根据所选任务，组内讨论作品整体设计。
④自主学习，利用网络资源，通过组内成员互助，完成创作任务。教师巡视指导，强调制作过程中的注意事项。
⑤每组选出本组最佳作品，由组长进行解说汇报。
⑥全班同学对每组作品进行点评，提出发现的问题，并请同学进行解答演示，教师补充。
⑦请同学解答教师在同学们制作过程中发现的问题。
⑧请学生再说一说，自己在制作过程中遇到的困难，请其他学生进行解答。
三、课堂总结
①你设计的作品里包含了哪些元素？分别用什么方法实现？
②如果要设计一份小报，版头要采用什么方式设置比较好？
③如果文本框内的文字被图片遮住了，你会采用什么办法解决？
④教师强调，制作作品时的注意事项。
电子小报英文 第5篇
类 别： 英语手抄报 学 校： 景谷县钟山乡新民小学 版面设计： 王光宇 王雪荣 尺 寸： 640x476 像素 班 级： 四年级(6)班 文字编辑： 王光宇 大 小： 80KB(81261 Bytes)指导老师： 李作莹 美术编辑： 王雪荣 暑假生活手抄报英文精美版——英语小报简介：本作品尺寸为640x476像素，由景谷县钟山乡新民小学四年级(6)班王光宇和王雪荣共同制作，手抄报版面设计过程在李作莹老师的指导下完成。本站推荐争说普通话黑板报图片，弘扬雷锋精神黑板报，五一快乐板报图片，风景主题黑板报版面设计图_锦绣中华，抗日战果黑板报图片，运动会黑板报设计图欣赏，小学三年级黑板报设计，希望你喜欢。
电子小报英文 第6篇
航天飞机如何发射上天
我的航天梦
每个人都有一个属于自己的梦想，而我的梦想就是想要翱翔于宇宙之中，去探索世界、地球之外的秘密。我曾无数次的遐想：我站在飞船的梯子上，挥手向送我飞天的人们致谢，然后，坐上飞船遨游神秘的太空，看牛郎织女牵手，看启明星升起东方，看北斗七星闪烁金光。我感到无比的自豪。我要实现这个飞天梦，我从小就要好好学习，认真思考，多看科学书籍，加强体育锻炼，增强体质，我相信，梦想只有通过辛勤的劳动与付出，脚踏实地的前行就能实现。我相信，我的梦想一定成真。
航天飞机和宇宙飞船一样，需要用运载火箭从发射台垂直发射。起飞后，它相继将两个固体燃料火箭助推器和又粗又长的外部燃料箱分离掉，轻装前进，并依靠本身携带的3台主发动机进入预定的轨道飞行。完成任务后返回。在重返大气层后，它和普通飞机一样能在机场跑道上滑行着陆。
学习雷锋电子小报 第7篇
雷锋原名雷正兴，中国湖南人。他1954年加入中国少年先锋队1960年参加中国人民解放军，同年11月加入中国共产党。他克己奉公，助人为乐，为集体、人民做了大量的好事，荣立二等功一次、三等功两次。
他是全心全意为人民服务的同志、中国人民解放军战士、伟大的共产主义战士。作为一名普通的中国人民解放军战士，雷锋在短暂的一生中帮助了无数人。一部可歌可泣的《雷锋日记》令无数读者为之动容。“雷锋精神”激励着一代又一代人学习。
关于雷锋的作文：雷锋角
今天，周老师带我们一起去小区的雷锋角参观。
只见雷锋叔叔戴着一顶军帽，帽沿下有两条又粗又浓的眉毛，再一看，眉毛下有一双炯炯有神的大眼睛望着远方，好像在注视着我们。
我家也有两个“活雷锋”，是我外公与爷爷，他们跟雷锋同岁，特别是外公，他当了20多年的解放军，常常做好事，真是一个“无名雷锋”啊！
同学们，雷锋叔叔虽然牺牲了，但他永远活在人们心中。下个月，我还要教大家唱《学习雷锋好榜样》这首歌呢！希望我们班每个同学都成为一个个小雷锋。
学习雷锋好榜样句子
1、虽然雷锋叔叔已经走了，但是他默默无闻、无私奉献的精神永恒，他没有过多的语言，但是他是行动上的巨人，雷锋是他的名字，也是所有与他一样默默奉献的人的名字。
2、让我们把雷锋精神化为实际行动，在雷锋精神的引导下，在时代的感召下健康、快乐的成长；让我们的身边拥有更多的“雷锋”，让雷锋精神永远发扬光大！让我们共同创造一个美好的世界，以雷锋为榜样，永远为人民服务！
3、学习雷锋好榜样，不是一句空号，而是应该从学习与生活中的点滴做起。
4、雷锋曾经说过一句话使我受益匪浅，他说：“人的生命是有限的，但是为人民服务却是无限的，我要把有限的生命，投入到无限的为人民服务中。”没错，只要我们还活在世界上一秒，都应该为祖国、为人民奉献出一切，这样我们的生命才会有意义！
5、雷锋，一个熟悉而又响亮的名字，他的一生打动人心。雷锋，一个未满七岁就成为孤儿的人；一个很小就当了儿童团团长的人；一个曾被记过无数功，做了无数件好事的人；一个年仅22岁就牺牲了的人，却为人们留下了最宝贵的财富。
6、雷锋叔叔把自己的一生都投入到了为人民服务中去，从不在乎自己。我要向雷锋学习，学习他那无私奉献的.精神，学习他那孝敬老人、尊重长辈、乐于助人、为人民服务的好品质。现在，我一定要努力学习，打好基础，长大后像雷锋叔叔一样成为国家的好栋梁！
7、时光宛如去伪存真的沙漏，但真诚的真实的真正的英雄无论世移时易，总会以他们独有的光芒永驻人们心间，就如雷锋叔叔这样一个看似普通的人，却给了世世代代的人们最真挚的感动与激励一样，雷锋精神永放光芒！
电子小报英文 第8篇
关键词：铁电材料,铁电电子发射机理,等离子体致电子发射机理
0 Introduction
Studies of ferroelectric cathodes were started in 1960 by Miller and Savage[1].Novel ferroelectric cathodes have gained attention due to lower cost, ease in manufacture, and absence of high vacuum requirements for handling and operation. These cathodes can be operated in poor vacuum and have low emittance and high brightness characteristics. They are superior to thermionic cathodes not only in their ruggedness but also due to their instant turn-on capabilities (thermionic cathodes require heating time) . Current densities up to 104～105 A/cm2 were theoretically pointed out by Hans Riege and Hartmut Gundel of CERN (European Organization for Nuclear Research) [2]. The strong electron emission is excited by submicrosecond polarization switching with high voltage pulses applied to ferroelectric materials[3]. The reported emission current density varies from 10-9 to 200A/cm2.
Theoretical explanations for ferroelectric electron emission have been proposed, and several models have been developed throughout the years[4,5,6,7]. In this paper, the study of the electron emission was carried out with three kinds of ferroelectric cathode materials: lead zirconate titanate (PZT) , natrium bismuthate titanate (BNBT) , and barium titanate (BT) . Especially, the waveforms of the electron emission were noticed.
1 Experiment
The samples were the chips with a diameter of 240mm and a thickness of 3mm, which were prepared by a modified mixed-oxide method. The ceramic chips were polished and patterned with gold, then were polarized under an electric field of 3kV/mm.
The experimental apparatus for electron emission consisting of a high-voltage pulsed generator, a vacuum container, and certain essential measuring circuits; a schematic diagram is shown in Fig.1. The sample was mounted in the vacuum container, the electron emission surface was bare, and the emitted currents were collected under driving pulse that was applied parallel to the polar direction of the samples.
2 Results and discussion
2.1 Results of emission current densities
Different kinds of regularity between electron emission current densities and exciting field with different ferroelectronic materials are shown in Fig.2.
For the BT material, it is shown that the variation of the emission current densities is the weakest, but its initial value is the highest. For the BNBT material, once the exci-ting voltage turned above the threshold value, the increase of current densities is linear, till the voltage reach to the flashover value. And for the PZT material, the value of initial current densities and amplify is in the mean value among the three ferroelectric materials, also the regularity contains the characters of BT and BNBT materials.
2.2 Results of the related performance parameters
The results of related performance parameters are shown in table 1.
The process of electron emission can be considered as the fatigue test for the ferroelectric cathode materials, so it is reasonable that the parameter values of piezoelectric coefficients (d33) , dielectric constant (ε) and loss tangent (tgδ) are all falling down after the electron emission. The value of d33 after electron emission is the data measured after 50 times test. PZT have the maximum decrement of the parameter change. It shows that PZT is the softest material, and its fatigue resistance is the worst. On the other hand, BNBT and BT material have good fatigue resistance, and both are lead-free materials. So both materials have unique dominance on utility.
2.3 Result of microscopic structure
Because the sample surface intercepted is the lengthwise section, the orientation of domains is uniform with the orientation of the prepolarization and electron emission. The microscopic of the different ferroelectric samples are shown in Fig.3.
The domains are in disorder with PZT sample after electron emission. Domains are not observed before electron emission with BT samples. Maybe it is because the samples are not prepolarized. Or it is maybe BT structure selected is typically “shell-core” structure. After electron emission, several domains are generated for transient polarization with high pulse voltage. The structure change of BNBT samples is not observed before and after electron emission.
2.4 Results of electron emission waveform
According to the uniformed experiment conditions, the waveforms of different ferroelectric materials are shown in Fig.4.The experiment conditions are uniformed as follows: (1) vacuum degree, 3×10-3Pa; (2) high pulse voltage, 10kV; (3) acquisition accuracy of oscilloscope, 200ns/div, etc.
If the influence from sharp peak on the trailing edge of pulsed voltage waveform to the current waveform was neglected, the current waveform of BT material will be single-peaked principally (Fig.4 (a) ) . And with the pulsed voltage higher, the electron emission current densities become higher, yet the shape of the waveform is invariable.
The current waveform of the PZT material is double-humped wave principally (Fig.4 (b) ) . And with the pulsed voltage higher, the peak value of electron emission current densities become higher, yet the shape of the waveform is variable more or less. Sometimes the first peak value is bigger than the second, sometimes it is in reverse.
For the waveform of the BNBT material, the main peak of current waveform is single-peaked, but before the main peak there are always some minor peaks existing (Fig.4 (c) ) . And with the voltage higher, the main peak value increases violently, wherever the minor peak value increases weakly.
2.5 Analysis of electron emission mechanism
There are mainly two mechanisms to explain the ferroelectric electron emission. One is the fast polarization switching mechanism, and the other is the plasma-induced electron emission mechanism. Considering that the waveform visualized reflects the characteristics between the ferroelectric electron emission current and high driving voltage, it inevitably includes much information about material specificity and electron emission mechanism. Based on the results above, the conclusion is drawn that electron emission of different ferroelectric cathode material follows one or both of the ferroelectric cathode emission mechanisms. Especially, the plasma plays an important role in electron emission.
For the BT material, it is not prepolarized, so its piezoelectric coefficients d33 is zero. But its dielectric constant and capacitance are high. Once high pulse voltage was applied to samples, with the voltage on pulse front edge rapid increase, local high field was initial formed in triple point (metal grid- mediator-vacuum) within submicrosecond time interval in cathode surface. Then high-field emission happened. Analyzed by waveform, the high capacitance characteristics of BT material have been influencing the shape of the pulse voltage waveform, so the emission current also contains influencing factor of materials characteristics corresponding. Also, damage on the sample surface is always observed in experiment, especially with the BT samples whose dielectric constant is up to 10000; sharp hole can be formed after emission experiment (Fig.5) . And all these phenomena are according to the characteristics of the plasma-induced electron emission.
For the BNBT material, fast polarization switching plays an important role in electron emission. The sample was prepolarized, and more charges were localized on the surface for internal ordered domains are arranged in its structure. Once the external field exerted on ferroelectrics causes the polarization switching, upsets equilibrium charge state and gives rise to unscreened charge. Because of the static repulsive force and internal field the unscreened charge can be emitted during one emission cycle. Therefore prepolarization is essential to electron emission which is caused by fast polarization switching. It is difficult to gain optimum polarization for BNBT material, so its piezoelectric coefficients is less than PZT material′s, and its emission current densities is also less than PZT material′s. In addition, dielectric constant of BNBT material is above 500, so plasma-assisted electron emission still potentially occurred. That is maybe the reason why some minor peaks existed before the main peak of waveforms.
For the PZT material, both fast polarization switching and plasma-assisted electron emission mechanisms are suitable. The sample is prepolarized, and its dielectric constant is between the values of BT and BNBT materials. The waveform shape of current emission is double-humped. The higher peak value shows indirectly which mechanism plays a major role in electron emission. Even the sample is not prepolarized, electron emission is also observed occasionally. It shows that plasma plays an important role in electron emission.
3 Conclusions
Electron emission experiment was carried out with three ferroelectric cathode materials: lead zirconate titanate (PZT) , natrium bismuthate titanate (BNBT) , and barium titanate (BT) . And the waveform of the high pulse voltage and current emission densities were studied. The results show that different ferroelectrics follow one or both of the ferroelectric cathode emission mechanisms. Especially, the plasma plays an important role in electron emission process. Electron emission of BT can be explained with plasma-induced electron emission mechanism and BNBT with fast polarization switching mechanism. For the PZT, both mechanisms are suitable.
参考文献
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