核能介绍英语视频

核能（或称原子能）是通过核反应从原子核释放的能量，符合阿尔伯特·爱因斯坦的质能方程E=mc² ，其中E=能量，m=质量，c=光速。核能可通过三种核反应之一释放：1、核裂变，较重的原子核分裂释放结合能。2、核聚变，较轻的原子核聚合在一起释放结合能。3、核衰变，原子核自发衰变过程中释放能量。

核能(Nuclear Energy) Nowadays,energy can be obtained through various sources such as oil,coal,natural gas,solar heat,wind,etc.But the conventional energy like oil,coals are being used up rapidly,and solar heat can't become widely used immediately for technological reason.In my opinion,unclear energy will take the place of conventional energy,because people now can control this energy freely,and unclear energy is non-polluting,inexhaustible,and it's much safer than coal and oil.Coal and oil are burned,they also produce many harmful gases,and the air has been seriously polluted by such gases,which will threaten people's living environment.And many accident happened because of the wrong use of such energies. However,such things can't happen when we use nuclear energy,Though when the nuclear leaks out,it will do great harm to people' s health and the environment.We can do enough work to avoid such things,and limited such things at a low percentage.

一、简介：核电站(nuclear power plant)是利用核裂变(Nuclear Fission)或核聚变(Nuclear Fusion)反应所释放的的能量产生电能的发电厂。目前商业运转中的核能发电厂都是利用核裂变反应而发电。核电站一般分为两部分:利用原子核裂变生产蒸汽的核岛(包括反应堆装置和一回路系统)和利用蒸汽发电的常规岛(包括汽轮发电机系统)，使用的燃料一般是放射性重金属:铀、钚。二、工作特点：一）优点1．核能发电不像化石燃料发电那样排放巨量的污染物质到大气中，因此核能发电不会造成空气污染。2．核能发电不会产生加重地球温室效应的二氧化碳。3．核能发电所使用的铀燃料，除了发电外，没有其他的用途。4．核燃料能量密度比起化石燃料高上几百万倍，故核能电厂所使用的燃料体积小，运输与储存都很方便，一座1000百万瓦的核能电厂一年只需30吨的铀燃料，一航次的飞机就可以完成运送。5．核能发电的成本中，燃料费用所占的比例较低，核能发电的成本较不易受到国际经济情势影响，故发电成本较其他发电方法为稳定。二）缺点1．核能电厂会产生高低阶放射性废料，或者是使用过之核燃料，虽然所占体积不大，但因具有放射线，故必须慎重处理，且需面对相当大的政治困扰。2．核能发电厂热效率较低，因而比一般化石燃料电厂排放更多废热到环境里，故核能电厂的热污染较严重。3．核能电厂投资成本太大，电力公司的财务风险较高。4．核能电厂较不适宜做尖峰、离峰之随载运转。5．兴建核电厂较易引发政治歧见纷争。6．核电厂的反应器内有大量的放射性物质，如果在事故中释放到外界环境，会对生态及民众造成伤害。 7．现阶段的核能发电，仍然会产生很多放射性废物，其中尤以高放废物的处理及处置为国际性难题。三、英语观点：一）反对方We are for to close the Nuclear power station, I’d like to illustratemy view in the following 4 aspects.1, DangerAs far as I know, building a nuclear power station cost hugeinvestments at the beginning of the project, and it cost a long time to get thecost back,Until now, china has already got 13 nuclear power stations, and another27 are in the process. But these 13 nuclear power stations only provide 1% ofthe total amount of the electricity. Besides, most of these stations are builtin the east part of China. However, more than 3/4 of the whole population livein this part. Once it went out of control, present technology can’t ensure anabsolute safety, so the consequence is inconceivable. What’s more, the damageit has made is a kind of long term effect and can’t be repaired.As Yangtze river is suffering from a drought, the inner land hasn’t gotenough water to support the nuclear power stations. However, a station needsmore than 2 times the water a normal coal station need to produce the same amountof water. Once it is short of water, the system can’t control the temperature,then the tragedy in Fudao will appear again.2, SupervisionThe great danger of it is not the station itself, but the supervision.For now, so many government officials embezzle money and are engaged in corruptpractices, what they think is one thing: money. In such circumstance, how canyou make sure that the building process of the stations is under a fairsupervision. If not, how can you guarantee the quality of the nuclear powerstations.3, WasteThough we are lack in many resources, do you know how many resourceshave we wasted every year? In western countries, even the temperature achieved30, they won’t turn on the air-conditioner. However, in our country, even it isonly 26, the air-conditioner will be running all day long in our governmentbuildings, let alone such waste in many other places. As a result, what weshould do is to decline the waste of different kinds of energy resources.4, Solar EnergyAfter the nuclear power explosion in Japan, Germany and Swiss hasdecided to close the nuclear power stations before 2034. In Germany, solarenergy provides more than 55% of the whole electricity, and it also produceelectricity by wind energy and water energy. Why can’t we also develop other typesof power stations as solar energy power station?In one word, Nuclear Power Station has got tremendous hidden danger,endangering the whole nation and other parts of the world, so they should beclosed as soon as possible.How soon will you take action after its explosionWhere to build二）支持方：Before built the nuclear power stations, many countrys can't provide the enough energy for their people.With the help of nuclear power station,we can get enough energy to do what we like and enjoy everything that we need . It's also benefical to the country's economic development.