This article also affords amendment and interpretation to the viewpoints that network effect be equal with the common scale effect anciently through a new visual angle, and supplies a slip of new clew for lucubration in network industrial law of development and methods.

本文通過一個新的視角国内自拍AV在线，對以往將網(wǎng)絡(luò)型產(chǎn)業(yè)網(wǎng)絡(luò)效應(yīng)簡單等同一般規(guī)模經(jīng)濟(jì)效應(yīng)的觀點給予了修正和解釋91九色偷情自拍视频，并為進(jìn)一步深入研究網(wǎng)絡(luò)型產(chǎn)業(yè)特征和發(fā)展規(guī)律提供新的思路。

A novel phase-shifted zero-voltage and zero-current switching PWM DC/DC full-bridge converter is presented in this thesis, which is based on the groundwork of summarization of the development of Power Electronics in recent years and lucubration in theoretical basis of modern high frequency soft switching power convert technique and analysis of operation principle, characteristic of the circuit and inherent drawbacks of the traditional phase-shifted zero-voltage switching PWM DC/DC full-bridge con...

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There had the appropriate combination of two factors for the highest volatilization amount of NH3 under two patterns . The applying effect of this technique under different soil types , crop kinds , climate and hole stuff awaited more lucubration .

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And there are no significant differences between the two sites. The human preadipocye is composited with scaffold material, and then it implants in nude mice subcutaneously. The new fat tissue also can be observed, but it is sheet, not lumpish or hemispheroidal. We still do more research in the field of growth and control of cell, screening better scaffole material in future study.

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Then, the dynamic behaviors of Lur'e system have been analyzed through the simulation method, and the paper presents that the final dynamic behaviors of the system are sequentially changed according to the following states: the unstable dispersing state, chaotic state, steady cycle state and balanced state respectively with the filtering wave function from weak to strong and under the condition of meeting parameters.

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But there are many basic research problems in the process of biology molecular binding to magnetite and it need to be thorough studied.

但在Fe_3O_4和生物分子組裝的過程中尚有許多有待深入研究的基礎(chǔ)問題www.欧美性爱。com。

The problem of magnetohydrodynamics in rotating spherical systems is no longer of purely mathematical interest.

近年來隨著空間探測技術(shù)和并行計算機(jī)的快速發(fā)展JIZZ公共狂露，給深入研究這一問題提供了機(jī)遇。

Considering the non-stationary specialties of AE signals, the diamond blunt feature extraction method based on bispectrum was studied. Furthermore, the diamond blunt feature extraction method based on main diagonal slice of normalized bispectrum magnitude of AE signal was proposed.

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However, how to explore and make use of the cultural capital to promote the economic growth is the significant problem to be considered.

而如何認(rèn)識和利用文化資本美女裸体黄18禁网站，使之推動經(jīng)濟(jì)增長，是特別值得深入研究和思考的重要問題a成黄视频免费看。

Therefore there is much need in the proteome level for further research of the development of malignant tumor.

為了深入研究惡性腫瘤的發(fā)生發(fā)展過程精品一区中文字幕，客觀上需要在蛋白質(zhì)組的水平進(jìn)行進(jìn)一步探索。