Chapter 1 gives a brief introduction to basic contents and methods of system identification and solutions of certain prob— lems met during the process of identificationIn chapter 2, the identification is accomplished by transforming the linear differential equation of a dynamic system into an algebraic form via block pulse functions .

第二章介紹采用正交函數(shù)BPF將含有未知參數(shù)的系統(tǒng)線性微分方程轉(zhuǎn)化為代數(shù)向量方程求解操操射射，獲取表征系統(tǒng)特性的傳遞函數(shù)或微分方程參數(shù)而達(dá)到辨識(shí)目的。

A generalized mathematical model was developed to describe the distribution of over-potential.Dimensionless variables μ and ω that characterize the polarization and influence of side electrode reaction in the system,were derived from modeling.Adomian's decomposition methodADM）was used to solve the nonlinear differential equation of the model to obtain an approximate analytical solution,which was in the form of algebraic expressions of infinite power series.By the solution,the relationship between over-potential distribution and average selectivity could be easily calculated without solving the nonlinear model time and again.

建立了描述超電勢分布的普遍化數(shù)學(xué)模型一区二区精品视频在线观看，歸納出表征電極極化和副反應(yīng)影響的量綱1數(shù)μ和ω中文无码精品久久高潮喷水，并用ADM（Adomian's decomposition method）對(duì)該非線性微分方程模型求解；所獲得的逼近解代數(shù)表達(dá)式99热这里只有精品免费观看，可方便地計(jì)算不同參數(shù)下超電勢分布對(duì)平均選擇性的影響人人操人人看人人做，而毋需反復(fù)求解模型微分方程。

Furthermore, in respect of the nature of female\'s sensatory pleasure, in western literary theory it is assigned more culture implication and regarded as the symbol of female\'sselflessness and fertility rather than pure physical pleasant sensation. In contrast, the depiction of this pleasant sensation by Chinese female writers indicates an inclination to narcissism and algolagnia which aggravate the segregation of the female from the society and the bereavement of female\'s subjectivity.

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Furthermore, in respect of the nature of female"s sensatory pleasure, in western literary theory it is assigned more culture implication and regarded as the symbol of female"sselflessness and fertility rather than pure physical pleasant sensation. In contrast, the depiction of this pleasant sensation by Chinese female writers indicates an inclination to narcissism and algolagnia which aggravate the segregation of the female from the society and the bereavement of females subjectivity.

另外，在女性快感的質(zhì)態(tài)上亚洲zaixianguankan，西方理論中的女性身體快感并非單純的生理快感日本免费高清，而是被賦予了文化的意味，是女性奉獻(xiàn)精神和創(chuàng)造能力的表征欧美色精品视频免费；而中國女性作家的快感想象則更多體現(xiàn)了自戀和自虐的內(nèi)容成黄色网站免费在线免费观看，對(duì)生理快感的依賴只能加劇女性和社會(huì)的分離，以及女性主體性的喪失看黄的网战。

To optimize the compounding of the photo-sensitive resin, a novel prepolymer was synthesized and token by FT-IR. The prepolymer was an alicyclic epoxy acrylate, which was synthesized from the alicyclic epoxy resin.

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The effect of alkaline metal, alkaline-earth metal or rare-earth metal oxides doping to Pd/γ-Al〓O〓 on the properties of supported palladium catalysts were investigated.

研究含氧條件下單Pd催化劑上進(jìn)行丙烯選擇催化還原NO的反應(yīng)www.zuneauto.com，考察浸漬法制備的Pd/γ-Al〓O〓催化劑中加入堿或稀土金屬氧化物助劑對(duì)NO轉(zhuǎn)化率的影響，并對(duì)催化劑進(jìn)行了XRD表征及在氧化氣氛中飽和吸附NO后的TPD研究欧美性爱电影免费在线观看。

The azo derivatives were hydrolyzed on the condition of alky to get end products. The structures of azo derivatives of 4-ASA and intermediate products were characterized by melting point, TLC, MS, FT-IR, 1H-NMR and 13C-NMR spectra properties in details.

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Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

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It is found that quaternary ammonium salt and alkylamine can react with montmorillonite and rectorite via cation exchange reaction and the resulting OMMT and OREC can act as nano-scale filler to PPC materials due to its increasingly swollen gallery spacing.

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Combining the performance evaluation (activity, selectivity and stability) and the characterization of the catalysts (XRD, TPD, FTIR and the pore structure measure), it can be concluded that :(1)The activity of modified β is higher than MCM-22, but the selectivity of ethylbenzene is lower about 3% than that of MCM-22;(2)The mounts of diethylbenzene and the other by-products are higher 1.7 times and 1.5 times than these of MCM-22 respectively;(3)The catalytic performance of zeolite mixture is nearly equal to modified β, but the selectivity of ethylbenzene is higher about 0.5% than that of modified β;(4)The catalytic activity of zeolite is mainly correlated with the number of acid sites, strength and distribution, and the distribution of products is determined by the binding energy of ethylbenzene and the pore structure, while the stability of catalyst is affected by the amount of poly-ring aromatic alkylate and the pore structure.

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