新型材料課件

Ⅰ 求材料科學基礎的課件

http://wenku..com/search?word=%B2%C4%C1%CF%BF%C6%D1%A7%BB%F9%B4%A1%BF%CE%BC%FE&lm=0&od=0 建議你到文庫裡面找找看

Ⅱ ppt 材料

那，答案可不好找，我自己整合的，趕緊拿去做好PPT吧^_^

The Chinese government has to manage the unintended consequences of more than two decades of uneven reform and development:relative poverty, income disparity,regional development gaps, rising social iscontent,deteriorating work safety,government incompetence and corruption and environmental degradation, among others.Ensuring equitable and well一rounded development is the foremost task of the current leadership.

Since Hu and Wen took office, there has been a shift in official rhetoric.Most important is the emphasis on the ordinary people and disadvantaged groups,such as peasants and migrant workers. There is also an emphasis on balanced and sustainable development, the so-called "scientific development"idea.These shifts in policy focus are guided by the concept of "harmonious society", which Hu first enunciated in February 2005. Such a society would contain elements of democracy, rule of law, fairness and uprightness, order, and balance between the needs of man and nature.

This is a proposal for equitable, balanced, and sustainable development. It stresses the "comprehensive building of a moderately well一off society" to improve the well-being of ordinary people; "comprehensively implementing scientific development"to achieve balance and sustainability; "building a new socialist rural society" to improve farmers'income and living standards; and to better conserve resources and protect the environment.

The current society is absolutely not a harmonious scoiety.we still have a long way to go. Our Party is working at it.

In Spite of the great achievements that China has achieved in the recent years, our country is still a developing country, which is facing many serious social problems. The most serious of all is overpopulation, for it has a passive influence on the national economy, ecation and environment. First and foremost, overpopulation is the main obstacle of the economic development in China. The limited natural resources in China can hardly support the excessively large population. Developing of our national economy, especially instry, needs great amount of natural resources, such as land, water, oil, coal, gas and iron. However, the natural resources are limited and decline very quickly when a large population exploits them everyday. Take fresh water as an example, in 1990, 58% of Chinese cities were suffered from the insufficiency of water. It not only birngs great disadvantages to people's daily life, but also has a passive influence on the economic development. Released by Chinese Academy of Social Sciences, the economic lost caused by the insufficiency of water is 250 billion RMB per year, including 230 billion lost of instrial value of output and 20 billion agricultural lost. As a result, the insufficiency of natural resources somewhat slows down the economic development in china. Second, overpopulation leads to the result of a rather low SOL( Standard of Living) in China. SOL means GDP per person, and it is an important index of the real national economic status. Although China makes great economic achievements and improvements every year, the economic achievements is not that glorious when divided by the large denominator of population. By the end of 1999, released by the State Familiy Planning Commission of China, China』s total population is 1,259,090,000. Though the GDP in China grew about 7% (SFPCC statics) in 1999, it was only enough to provide the newborn babies (19,090,000 -SFPCC statics) with food and clothes, while could rarely be used for the further development of the national economy. As a result, overpopulation has a passive influence on improving people's standard of living. Besides the passive influence on economy, overpopulation is also regarded as the major obstacle for improving the ecational condition in China, which weakens China's competitive power in the world. With the increasing population, our society needs more teachers and facilities. However, since ours is a developing country, the fund for ecation is not enough in China. In many places, especially in the countryside, there are not enough teaching facilities. Consequently, the youngsters in those places cannot get good ecation. Even in large cities of China where ecational system are relatively complete, the teaching facilities are still not pleasant enough, which can be seen from the violent competition in all kinds of entrance examinations. Ecation is the basis of the development of science and technology, and the competition between nations in today's world lies somewhat in the competition of science and technology. The poor ecational situation that overpopulation brings about hampers the China』s science and technology from developing too some degree and weakens China's competitive power in the world. Last but not the least, overpopulaiton has a negative influence on the environment. The case in China now is the densely-populate cities, excessively-cut forests and seriously-polluted rivers. Overpopulation is an important reason for the environmental pollution. Some people say that the sky now is not as blue as that before. In my mind, overpopulation should be part of its reason. The environment now in China can hardly support the excessively large population , and the negative influence of overpopulation on the environment is quite obvious. Some people may argue that overpopulation is not the most serious social problem compared with some other issues, such as pollution and corruption. Actually, this opinion is not correct. National economy is the basis of improving people's SOL and is also the basis of current international competition, ecation is the basis of the future international competition, and the environment is the basis of the existence of all creatures, while now they all relate closely to the overpopulation issue in china. What kinds of other issues can be more important than all those above? Also, this issue should be discussed based on each country』s background. China has a large population base. Take 1999 as an example, though the natural growth rate is 8.77‰( SFPCC) in China, it brings a population increase of 19,090,000(SFPCC statics), which equals a medium-sized country in Europe. As a result, overpopulation may not be that serious in some other countries, it does be the most serous social problem in China. In order to solve the overpopulation issue, the government should pay great attention to it. Some policies, such as 「 One China policy」, have already been made in China. They have already paid off. For instance, in 1994, the natural growth rate was 11.21‰, but in 1999 it was only 8.77‰ (SFPCC statics). However, China still has a long way to go in this aspect, for the overpopulation is still serious now, just like what have been mentioned in the previous paragraphs. In a word, overpopulation is the most serious social problem in China now, and great efforts are needed to make in order to solve it.

Bibliography Resources are from the websites of the State Family Planning Commission of China& Chinese Academy of Social Sciences .

Ⅲ 哪種材料硬，小學科學課件，科教版

【教學目標】
科學概抄念：
1．物理性質可以用來描述材料，比如硬度、柔韌性和在水中的沉浮能力。
2．材料的硬度越大，就越能防止別的物體破壞它的表面。
過程與方法：
1．用簡單測量的方法檢驗材料的物理性質，通過比較發現材料的不同物理特性。
2．選擇適當的詞語定性描述材料。
情感、態度、價值觀：
1．發展對物質世界的探索興趣。
2．認同物理性質是可以被觀察和測量的觀點。
3．增強材料循環利用、節約資源的環境保護意識。
【教學重點】比較材料軟硬的方法。
【教學難點】選擇適當的詞語定性描述金屬的特徵

Ⅳ 求助課件:「哈工大材料學院復合材料概論課件」. 本人郵箱：[email protected]

這個課貌似不是給材料學院本科生上的，是復材所的，現在基本歸航院了，所以得去航院找

Ⅳ 誰有 新型高分子材料 應用有關的 PPT 或者PDF 的文件

功能高分子材料來一般指具有傳遞自、轉換或貯存物質、能量和信息作用的高分子及其復合材料，或具體地指在原有力學性能的基礎上，還具有化學反應活性、光敏性、導電性、催化性、生物相容性、葯理性、選擇分離性、能量轉換性、磁性等功能的高分子及其復合材料。功能高分子材料是上世紀60年代發展起來的新興領域，是高分子材料滲透到電子、生物、能源等領域後開發涌現出的新材料。近年來，功能高分子材料的年增長率一般都在10%以上，其中高分子分離膜和生物醫用高分子的增長率高達50%。
按照功能特性通常可分成以下幾類
（1）分離材料和化學功能材料 （2）電磁功能高分子材料 （3）光功能高分子材料 （4）生物醫用高分子材料

Ⅵ 材料科學基礎課件

http://www.elecfans.com/soft/courseware/2008/200809239134.html這個網站上下載回。答