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1.
LI Wei ZHU Xin-jian CAO Guang-yi 《浙江大学学报(A卷英文版)》2007,8(5):734-740
This paper describes a solar photovoltaic fuel cell (PVEC) hybrid generation system consisting of a photovoltaic (PV) generator, a proton exchange membrane fuel cell (PEMFC), an electrolyser, a supercapacitor, a storage gas tank and power conditioning unit (PCU). The load is supplied from the PV generator with a fuel cell working in parallel. Excess PV energy when available is converted to hydrogen using an electrolyser for later use in the fuel cell. The individual mathematical model for each component is presented. Control strategy for the system is described. MATLAB/Simulink is used for the simulation of this highly nonlinear hybrid energy system. The simulation results are shown in the paper. 相似文献
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马琳 《英语大王(小学)》2005,(8)
It's spring now. The flowers are blooming up. The trees are smilling happily in the sunshine. The swallows are singing in the blue sky. Now the Blacks are having a picnic on the grass. Ann is eating sandwiches. Tom is flying a kite. Mr Black is siting under a tree. 相似文献
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Sapir-Whorf Hypothesis(SWH) is a great contribution to the study of the relationship between language and thought.This paper, with a dialectic view, aims to do some analyses to the SWH and arouse the readers the implications of the hypothesis on the second language learning. The analysis is based on explanations with examples. The final finding is that although it is subject to fierce controversy and scorn, SWH and our language leanings are inter-effected, and the cultural diversities behind it should be respected. 相似文献
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1 三倍triple He tripled his mcome. 他使自己的收入增至三倍2.三只手pickpocket The man in black on the bus is a pickpocket. 车上穿黑衣服的男人是个三只手。3 三级风gentle breeze Gentle breeze is not strong,but very comfortable,I think 我认为三级风不强烈,反倒很舒服。4 三角裤brief My pants are small now,I want to buy some briefs. 我的平角裤小了,我想买几条三角裤。 相似文献
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《英语辅导》2006,(3)
The good you find in others, is in you too. The faults you find in others, are your faults as well. After all, to recognize something you must know it. The possibilities you see in others, are possible for you as well. The beauty you see around you, is your beauty. The world around you is a reflection, a mirror showing you the person you are. 相似文献
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同步阅读Ⅰ.这是一张在公园里拍的照片。瞧,上面都有谁呢?他们都在干什么?阅读短文,并完成下面的句子。This is a picture of a park.Y ou can seesom e people in the park.There is a sm all river.There aren t any flowers,but there are som etrees.The G reen fam ily are in the park today.Its a beautifulday.M r G reenis drinking a coke and reading a book.M rs G reen is watching Jim andM ary.They are throwing a frisby(飞碟).Polly is singing in a talltree.The G reen fam ily is very happy today.1.The G re… 相似文献
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The rambutan is a tropical seasonal fruit. It has a hairy look. The hairy part is called the whiskers. The whiskers cover its skin. They are either yellow or red in colour.The fruit is white, oval and fleshy. The flesh is firm, sweet and juicy. The thick flesh covers a big seed. Sometimes, the fruit is sour. 相似文献
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1.The Chinese rose up against the foreign invaders.2.Now,let's enter into conversation.3.We should prepare for trouble.4.The nurses are attending to the patient.5.The room can serve us for a lab.6.She asked me if I had found out the truth.7. We went to the cinema after a quick supper.8.Tom,please join in the game.9.Her parents promised that if she would pass the exam,they could buy him a new bicycle.10.A little child as he is,he can lift the heavy box. 相似文献
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《英语大王(小学)》2014,(Z1):62
I think you can remember these ten words now.They all have the letter"a"with the sound/(?)/.Let’S read this tongue twister(绕口令)about the sound/(?)e/.A fat rat is wearing a cap.A black cat is wearing a hat.The fat rat is carrying a bag.The black cat is sitting on a mat.The rat and the cat are looking at a map.They are helping a sad bat find his dad. 相似文献
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INTRODUCTION The Lanzhou Xiaoxihu Yellow River Bridge is one of few partially cable-stayed bridges. It is con-sidered a partially cable-stayed bridge because beams are under both axial loads and flexure loads. The cables are arranged in semi-fan configuration in a single plane so that they can be easily anchored to the tower. The cable-stayed portion is a 136 m center span with two 81.2 m side spans. The width of box girder’s top flange is 27.5 m, and the bottom flange’s width is 15.… 相似文献
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It is a fine day.The sun isin the sky. Mr Green and hisfamily are in the park.Mr andMrs Green are sitting under thetree and looking at their chil-dren.Their daughter, Ann isflying a kite.The boy in the hatis her brother,Joe.He is read-ing a book on the grass(草地).There is also a young boy.He 相似文献
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There are many expressions about the word “bag” or using the word “bag” in English.So today,let’s start with the word “bag”.英语中有很多表达与“袋子”一词相关或者使用了“袋子”这个词。今天我们就从“袋子”这个词说起吧。The bag is one of the most simple and useful things in the world.It is a(容器)made of paper or cloth.It has given the world many strange expressions that are not very simple.Some of them are used in the United States today. 相似文献
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《湖北广播电视大学学报》1996,(11)
1.Find the choice that best completes each of the follow-ing sentences:20%1.The young couple bought__for their living room.A.some new furniture B.some new furnituresC.many new furniture D.many new furnitures2.Asia and America are separated by__Pacific Ocean.A.the B.a C.an D.some3.She was__girl that he fell in love with her at firstsight.A.a nice so B.so niceC.so a nice D.so nice a4.He is standing with__hands in his pockets.A.both B.all C.each D.either5.The population of China is larger than__of America.A.this B.that C.these D.those 相似文献
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Passage 1
I have two good friends. They are twins. One day I go to their home after school. They have a very nice bedroom. The room is new. A map of China is on the wall. A nice picture is on the wall, too. In the picture there are hills and a river with a boat on it. A big desk is beside the bed. Two chairs are behind the desk. Their books and pens are on the desk. Their school bags are behind the chairs. They have a cat. It＇s under the desk. The cat looks like a hat. A light （灯） is on the desk. 相似文献
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正Mr Wang is a PE teacher at Chong Ming Primary School.He can speak a little English.Sometimes he gives orders in English.Such as,stand in a line,put your feet together,jump up and down,lie on your back.He teaches very well and his class is very interesting.His students like him very much.Look!The children are in the playground.They are having a PE lesson.The boys are playing basketball.Mr Wang is 相似文献
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一、教学内容（Teaching content）
There is a lion. He is big. He is very strong. His teeth are big and sharp.
This is a mouse. She is small. Her teeth are small and sharp. 相似文献
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This is a photograph of our village. Our village is in a valley. It is betweenn two hills. The village is on a river. Here is another photograph of the village. My sister and I are walking along the banks of the river. We are on the left. There is a boy i… 相似文献
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There are many expressions using the word“eye”in English.So today,let’s start with the word“eye”.英语中有很多表达中使用了“眼睛”这个词。今天我们就从“眼睛”这个词说起吧。When it comes to relationships,people’s eyes can be a window into their hearts.This means that their eyes can tell a lot about how they feel.I will tell a story about a man and a woman who are teachers at the same school.The woman is interested in the man.She uses many methods to catch his eye,or get him to notice her.Once he sets eyes 相似文献