共查询到20条相似文献，搜索用时 31 毫秒
1.
ZHANG Yun-fei 《海外英语》2013,(9)
The Acorn Gatherer by Richard Jefferies is an allegorical tragedy, in which a nameless boy, born out of wedlock, is viewed as a sort of icon of sin, and is ultimately driven to death by the rigid and u... 相似文献
2.
乔南 《中学数学教学参考》2008,(11)
Vectors may also be multiplied by a number. The productof the vector a by the number λ is defined as the vector a λ=λa, the absolute value of which is obtained by multiplying theabsolute value of the vector a by the absolute value of thenumber λ, i. e. |λa|=|λ||a|, the direction coinciding withthe direction of the vector a or being in the opposite sensedepending on whether λ>0 or λ<0. If λ=0 or a=0, then λ a 相似文献
3.
INTRODUCTION A polydisperse precipitate produced by nuclea-tion in a metastable supersaturated solution is far from thermodynamic equilibrium, i.e. a state of minimal free energy. A decrease of free energy is accom-plished by a coarsening of the precipitate which es-sentially reduces the surface free energy with respect to the surrounding solution. The process is called Ostwald ripening and is a direct consequence of the Kelvin effect (Adamson and Gast, 1997), that is the higher solubi… 相似文献
4.
By using ABAQUS/Explicit, the dynamic process of an offshore wind turbine（OWT） stricken by a ship of 5000DWT in the front direction is simulated. The OWT is located on a large-scale prestressing bucket foundation constructed by an integrated installation technique. According to the simulation results, under the ship collision, a cer-tain range of plastic zone appears within a local area of arc transition structure of the bucket foundation, and the con-crete plastic zone is seriously damaged. As the stress level of OWT tower is relatively low, the OWT tower is less af-fected. A great inertial force is generated at the top of the OWT tower as the mass of nacelle and blades is up to 400 t. The displacement of the tower is in the opposite direction of the ship collision at the end of 1 s under the action of iner-tial force. There is only a minor damage in the ship bow. Most of the kinetic energy is transformed into the plastic dissipation and absorbed by the arc transition structure of bucket foundation. 相似文献
5.
The use of "however" by Chinese learners’ writing is studied through a comparison of its use in CLEC and in BROWN and found that "however" is overused in the front of a sentence,underused in the middle of a sentence and misused as a disjunctive conjunction,as is followed by the analysis of three attributable factors,i.e.the writing style,confusion with "but" and negative L1 transfer. 相似文献
6.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
7.
Riemann surface with almost positive definite metric 总被引：1，自引：0，他引：1
陈志国 《浙江大学学报(A卷英文版)》2005,6(7):747-749
In this paper, we consider and resolve a geometric problem by using μ(z)-homeomorphic theory, which is the generalization of quasiconformal mappings. A sufficient condition is given such that a C1-two-real-dimensional connected orientable manifold with almost positive definite metric can be made into a Riemann surface by the method of isothermal coordinates. The result obtained here is actually a generalization of Chern's work in 1955. 相似文献
8.
Learning a language, in fact, is inseparable from learning its culture and taboo is part of it. Justified by a number of ex?amples, a study of the similarities and differences of the English and Chines... 相似文献
9.
《海外英语》2003,(12):1
Youth is not a time of life; it is a state of mind; it is not a matter of rosycheeks, red lips and supple(柔韧的)knees; it is a matter of will, a quality of imagination, a vigor of the emotions; it is the freshness of the deep springs of life.Youth means a temperamental predominance(支配,主导)of courage over timidity(胆怯),of the appetite for adventure over the love of ease. This often exists in a man of 60 more than a boy of 20. Nobody grows old merely by a number of 相似文献
10.
Jessica, the daughter of Shylock in The Merchant of Venice, has often been hailed as a free woman after she disentangles herself from the bondage of her patriarchal father. However, this paper argues that she is still prejudiced against by her new friends because she is considered to be a Jewess by blood. So her flight from her father is not an escape from bondage but a plunge into another kind of bondage. 相似文献
11.
It is generally acknowledged that the first 17 sonnets of Shakespeare is a set of poems to urge a young man to get married and have a baby so as to immortalize his beauty.However,these sonnets mirror Shakespeare’s mediations on life and death.Man is by nature mortal being,and time is the enemy of life.To endure beauty long,man can fight against time by means of child-bearing and poetic creation.The first 17 sonnets address the theme:the essence of life is to create. 相似文献
12.
One dimensional electron density perturbation is derived by using the cold fluid equation,Possion‘s equation and the continuity equation.The perturbation is generated by a driving laser pulse propagating through a plasma,The upshifting of the frequency of a trailing pulse induced by density perturbation is studide by using optical metric.The results show that it is possible that the photon will gain energy from wht wakefield when assuming photon‘s number to be conserved.i.e..,thd photon will be accelerated. 相似文献
13.
Like her contemporaries, Marianne Moore is also overwhelmed by Chinese paintings, porcelains, philosophy and the like. Throughout her life, Moore is fascinated by Taoist aesthetics which initiated by Lao Tze and his follower Zhuangzi. At the beginning, Moore is fascinated by the Chinese flower and animal paintings pursuing a context of curiosity and outset to express her own dissatisfaction;With broadening the eyesight benefited from the relationship among other avant-garde painters, noted poets and editors, Moore is capable of creating a subtle harmony of opposites, a balancing of yin and yang, within the poems itself, the effect of which is beautiful, harmony and potentially transforming. In the last period of her poem-writing career, Moore turned to be versed in discussing and interpreting Tao. 相似文献
14.
A new style of hydraulic steel gate based on the principle of bionics is proposed in this paper. It has a fish-like shape and consists of right arches, invert arches, connection components and a face plate. It would be first applied in the project of Caoe River Sluice, used as both tidal barrage and flood gate. Compared with conventional hydraulic steel gate of beam grids, this new style of hydraulic steel gate can save up to 30%-50% of steel consumption. The dynamic behavior of the new gate under the impact load of tidal bore is investigated. The impact load of tidal bore is considered by a load spectrum obtained by field observation over a long period of time. Then a numerical analysis of the gate under the load spectrum is carried out by finite element method. The fluid-structure interaction is considered in the analysis. And a comparison between the response of the gate under the impact load and the response of the gate under the corresponding static load is conducted and indicates that the gate has a dynamic magnification factor of 1.2. 相似文献
15.
XIANG Yu-min 《重庆大学学报(英文版)》2008,7(3):210-215
To determine the motion of a charged particle in a magnetic field produced by a current flowing along a long column conductor, the equation of the motion was established on the basis of Lorentz force. Qualitative analysis and quantitative solutions demonstrated that the motion contains nonlinear oscillation. The oscillation can be treated as the perturbation of the helical motion, Which the particle undergoes in a special condition. The general motion is superposition of two helixes, one as an axis spiraled by another. It is proven that the oscillation is stable. 相似文献
16.
《海外英语》2014,(11):16-16
International English! English is the language of international communication. According to the British council, English is spoken as a first language by around 375 million people, and as a second language by a further 500 million. English has official or special status in about 80 countries, and is spoken in another 100, with a total population of over two billion users. 相似文献
17.
WU Xiao-juan ZHU Xin-jian CAO Guang-yi TU Heng-yong 《浙江大学学报(A卷英文版)》2007,8(9):1505-1509
The solid oxide fuel cell (SOFC) is a nonlinear system that is hard to model by conventional methods. So far,most existing models are based on conversion laws,which are too complicated to be applied to design a control system. To facilitate a valid control strategy design,this paper tries to avoid the internal complexities and presents a modelling study of SOFC per-formance by using a radial basis function (RBF) neural network based on a genetic algorithm (GA). During the process of mod-elling,the GA aims to optimize the parameters of RBF neural networks and the optimum values are regarded as the initial values of the RBF neural network parameters. The validity and accuracy of modelling are tested by simulations,whose results reveal that it is feasible to establish the model of SOFC stack by using RBF neural networks identification based on the GA. Furthermore,it is possible to design an online controller of a SOFC stack based on this GA-RBF neural network identification model. 相似文献
18.
Is He Living,or Is He Dead is a splendid sample of Twain’ s bitter satire.By focusing on textual analysis of the story,this thesis is trying to illustrate "surviving by dying",such a paradox of life implied by Mark Twain,and to reveal the tragic nature masked by the humorous satire in the story. 相似文献
19.
The poem O Captain! My Captain! is a good poem written by the great American poet, Walt Whitman. It is a eulogy written on the death of Abraham Lincoln. In this poem the poet expresses his sadness at the death of the great leader and expresses his great love of his beloved leader. This paper is to have a stylistic analysis of the poem by observing its phonological, lexical, semantic and syntactic features. 相似文献
20.
Interpretation is a very immediate translation practice.To be a qualified interpreter,you must have a good bilingual ability,rich knowledge as well as some relevant skills.The scene of interpretation is very complicated,so interpreters often can not successfully com plete the task of interpretation only by memory.They have to rely on the help of taking some notes.Therefore,note-taking is of essential importance in interpreting and it is very important in interpreting practice.This paper mainly make a brief summary of five kinds of note-taking symbols commonly used and illustrates each one by one.Besides,this paper puts forward practical training methods of note-taking. 相似文献