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It is pointed out that not only Foochow didnt offer a good market environment to the sale of import and export articles in the hinterland, which restricts the import and export trade of Foochow Port, but also the bad transportation environment of Min River prevents the circulation of articles by investigating the business environment of Foochow City and the transportation environment of Min River, which is the main channel of goods transportation between Foochow Port and its hinterland.

通過對福州城本身商業(yè)環(huán)境的考察，通過對福州港與其腹地間商品運輸?shù)闹饕馈}江——運輸環(huán)境的考察国产91ⅴ在线精品免费观看，指出不但福州沒有為腹地進口商品的銷售和出口商品的外銷提供良好的市場環(huán)境一级二级毛片18岁禁看视频黄,，從而限制了福州港的進出口貿(mào)易，而且閩江惡劣的運輸環(huán)境欧洲性交网，也阻礙了商品的流通黄大片视频。

The distance education is used as a kind of brand-new teaching method, it applies computer technique and network correspondence techniques to teaching realm, breaking the traditional education for region and horary restricts. It produces important but profound influence in the education idea, content of course, teaching method of the school and the whole education construction.

遠程教育作為一種嶄新的教學(xué)方式，它將計算機和網(wǎng)絡(luò)通信技術(shù)應(yīng)用到教學(xué)領(lǐng)域，突破了傳統(tǒng)教學(xué)對地域和時間的限制国内自拍日韩高清视频在线，對學(xué)校的教育觀念在那里可以免费看啪啪、教學(xué)內(nèi)容、教學(xué)方法乃至整個教育結(jié)構(gòu)產(chǎn)生了重大而深遠的影響9999热。

In middle school, classroom teaching is the principle part in chemistry teaching, in which classroom asking is a very important link. It is the efficiency of classroom asking that became the key factor that restricts the effect of classroom teaching. But in the reality, it is found that there are innumerous low-efficiency and even non-efficiency classroom asking in chemistry teaching.

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Mechanistically, the irradiation was found to alter the salient toughening mechanisms, manifest by the progressive elimination of the bone's capacity for plastic deformation which restricts the intrinsic toughening from the formation "plastic zones" around crack-like defects. Deep-ultraviolet Raman spectroscopy indicated that this behavior could be related to degradation in the collagen integrity.

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But the research on Neopaleozoic petroleum reservoir geology and pool-forming conditions in this area is a weak point all the times, as restricts Neopaleozoic exploration activity in south of North China. Therefore, the research on Neopaleozoic petroleum reservoir geology and pool-forming conditions in south of North China Basin is very important for objectively evaluating exploration prospect and optimizing exploration targets in Neopaleozoic of south of North China.

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The external circumstance such as temperature and stress can induce nonreciprocal phase noise, which restricts the developing of high precision gyro.

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Overproof of monomer content is the key problem that restricts poly-urethane coatings' development.

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Since Watson and Crick have brought forward the model of DNA helix structure and explain about it's reproduce mechanism in molecule level, research work concerning DNA has been continuously lucubrated. However, whether translating inheritance information and rebuilding DNA molecule via menstruating DNA sequence, or to date the most compelling gene project, chromosome protract et. al, there all need a sort of molecule scissors cleaving DNA, DNA cleavage reagent. At present, tool enzyme of cleaving DNA is mostly DNA restriction enzymes founded in 70 years, which only cleave DNA at specific 4-8 base pair sequences that are usually palindromic, so this restricts the at very fast speed developing of gene technology at certain extent.

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The institutional change dominated by the government in our country has the following characteristics: The basic line and criteria of the institutional change are established by the government; in a institution-suppliers capacity, the government supplies institutions by the means of laws, legal provisions, policies and so on; the government sets up the barriers for institutional innovation and restricts the institutional innovation of the main body in market; the government selectedly promotes the happening of induced institutional change and improves its level of standardization and institutionalisation .

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