共查询到20条相似文献，搜索用时 187 毫秒
1.
Considering the effect of planet’s number on the dynamic characteristics of the planetary gear system, a translation-torsion lumped-parameter model of 2K-H spur planetary gear system was established. Through the analysis of numerical solution, the results show that 1) When the planet’s number is more than 3, the order of the natural frequency will become the same; 2) When the planet’s number increases, the natural frequencies of planet mode remain invariant, but when it comes to rotational mode and translational mode, the higher order natural frequencies increase and the lower order natural frequencies decrease; 3) The planet’s number has a great impact on the higher order natural frequencies and a little impact on the lower order natural frequencies; and 4) To avoid the resonance, we can appropriately increase or decrease the number of the planet. 相似文献
2.
LAN Zi-dong 《重庆大学学报(英文版)》2016,15(1):35-42
A new kind of polycarboxylate superplasticizer with high slump loss resistance was obtained by designing scheduled molecular structure. The number average molecular mass of the polymer was characterized by the gel permeation chromatography measurements. And chemical structure of the polymer was observed by the Fourier transform infrared spectroscopy (FT-IR). The results show that the good workable maintaining of self-compacting concrete could be achieved through direct adjustment of number average molecular mass and different unsaturated monomer in synthetic process. The FT-IR analysis illustrated that the high slump loss resistance of polycarboxylate superplasticizers with ester and carboxyl group and expectations of molecular structure were designed. 相似文献
3.
黄旦谷 《语数外学习(高中版)》2002,(7):90-91
be of结构常见于较正式的文句中，其后面的名词常是一些抽象名词，如value，importance，use，significance，help等，这些名词用来说明主语的各种不同的性质。 相似文献
4.
邱学绍 《重庆大学学报(英文版)》2003,2(1)
~~Super number roots and factorizations for a kind of polynomial@邱学绍$Information and Computation Department, Zhengzhou Institute of Light Industry, Zhengzhou450002, P.R. China~~ 相似文献
5.
初中英语中表示“多”的词有many／much，a lot of／lots of,a number of, some／any等。表示“少”的词有few，little，afew，a little，a bit，a bit of等。它们的区别如下： 相似文献
6.
在英语学习中，我们常遇到“be of n．”结构。“be of n．”中的介词短语在句子中常作表语、定语或补语，用来说明人或事物的性质或特征。该结构常见于以下几种情况： 相似文献
7.
英语双数名词"a couple of"对名词性成分的选择是个范畴化的过程。在"a couple of"范畴中,整体概念是范畴中心,是"a cou-ple of"对名词性成分最基本的选择。随着范畴中心向外延扩展,分为范畴的近距扩展和远距扩展。 相似文献
8.
周斌 《实验室研究与探索》2011,30(7):61-63,71
"Problem of Towers of Hanoi",用递归的方法能很容易地解决问题,不用递归的方法将会是比较困难,因为随着参与盘子数的不断增多,计算时间和复杂度将会不断增多。运用仿真软件能清晰地勾勒出每个盘子的移动轨迹并给出详细的移动步骤,这将会使此问题能更形象、更直观的解决。 相似文献
9.
LI Shu-jin LI Sheng-hong 《浙江大学学报(A卷英文版)》2006,7(4):584-590
INTRODUCTION The valuation and hedging of the ever increasing number of exotic options, is a topic that interests many practitioners seeking to answer their customer’s need to hedge risk (in particular in the foreign ex- change markets). Exotic options, or “path-dependent” options, such as compound options, reset options and Barrier options and the like, are options whose payoff depends on the behavior of the price of the underlying between 0 and the maturity (assumed to be fixed), rath… 相似文献
10.
Adopting a stylistic approach, this paper tries to figure out the theme of Larkin’s “The building” by means of observing it on three different levels: aural, grammatical, and semantic, offering an example of applying stylistic methods to the study of poetry. 相似文献
11.
This paper interprets the connotation,denotation and the symbolic meaning of SEVEN from the perspective of semiotics.The number SEVEN means samsara,destiny,reincarnation,the ending and a brand new beginning,satisfaction after a lot of suffering in the East.While,in the West,besides these,it refers to the magic and holy power of the God,mystery,completeness and perfection,occult,happiness and luck. 相似文献
12.
许国强 《常熟理工学院学报》2001,15(3):87-91
介词of用于形容词后是一个值得注意的语言现象，但尚未在任何著作中得到专门讨论，本文将of这一用法分成三类：of意思为“由……表现出的”，其补足成分为形容词所表示的某种行为的实施者，或称逻辑主语，of意思为：“在……方面”，它与后面的名词一起作为句子的方面状语；of用来表示形容词的应用情况，其补足成分为形容词所表示的动作或行为的逻辑宾语，文章随后提供了大量搭配和实例，对of的这种用法作了较为详尽的分析和研究。 相似文献
13.
ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of ComputersApplication Research of Compu 相似文献
14.
王本刚 《语数外学习(初中版)》2007,(5X):45-46
量词是表示人、事物或动作的单位的词（词组），有些量词（词组）可以表示确定的数量，如a cup of tea，two pieces of bread，a bar of soup等；有些量词（词组）则表示不确定的数量，如number，amount，quantity，few，little等，这里我们着重讲解一下后者。学习时须记住它们各自的习惯搭配及所修饰的是可数名词还是不可数名词。[第一段] 相似文献
15.
In Shakespeare’ s Merchant of Venice,Portia is portrayed as a legal expert.Considerable scholarly work has been devoted to the discussion of the play,and Portia’ s ruling appears to be supported by a majority of scholarly commentary.However,a number of important legal issues regarding the contract represented in the play require immediate attention.This article attempts to re-evaluate Portia’ s ruling and the conventional views on Portia as a legal expert by considering the issues in question within a recent framework of law,and will argue that Portia’ s role as a legal expert is questionable.Antonio,Bassanio,and Shylock can all ’ walk free’. 相似文献
16.
In recent years,a large number of dialect words merged with Chinese mandarin,becoming a main source of Chinese new words and contributing to the diversity of Chinese.Targeting this phenomenon,the researchers conducted research on those words.By studying literature,sending out questionnaires,making field trips and observations,this paper analyzes the main factors influencing the dialect words’absorption in Chinese mandarin and the channels involved,summarizes the traits of their formula tion. 相似文献
17.
姚文丽 《中国科教创新导刊》2009,(34):91-91
语言学家常说：＂英语是介词的语言。＂（English is a language of preposition）这说明介词是英语中最常用的词类。介词of又是英语中最常用的介词之一,使用频率非常高,多种书中都有其含义和用法的详细介绍。在我工作的学校里,学生觉得它既简单又复杂,简单是因为它容易拼写,朗读和记忆,难是因为不能在实际运用中正确地使用它、翻译它。学生在介词of的使用和翻译方面经常出错或与其它介词混淆。因此有必要和大家一起来学习,探讨。 相似文献
18.
From the awakening and the development of feminism, to the formation of the Cinderella complex, much attention has been paid. As we know the reason of the popularity of Cinderella complex is patriarchal rule forces that reigns the world, the only way to remove this psychological problem is the reconstruction of the concept of gender relationship. This essay tries to find some reasons for the popularity of the Cinderella complex by some analysis of the developing of Cinderella mode and Cinderella complex, thus giving some measures. 相似文献
19.
在中学英语教材中，常常看到下面类型的句子： It's very difficult for me to do it. It's very nice of you to lend me the bike. “ for＋ n.(pron.)＋动词不定式”这种结构叫做动词不定式复合结构， for后的名词或代词是动词不定式的主语，它与动词不定式 (短语 )之间具有逻辑的主谓关系。什么时候要用 of代替 for呢 ? 如果句中用描写人物特征或品德的形容词作表语时，就要用以 of引导的动词不定式复合结构。例如，下面句子中的介词 of都不能改为 for： It is stupid of him to do that.(他做那事真愚蠢。 ) It … 相似文献
20.
A Rose for Emily is the masterpiece of William Faulkner, who is regarded as the founder of Southern literature. The Fall of the House of Usher is one of the most popular short stories written by the great American writer Edgar Allan Poe. They have common ends that the main characters of the two novels—Emily and Usher are all destruction of their unbalanced personality.This thesis will set a new point from a branch view of psychology—personality psychology to analyze the two characters Emily and Usher, how they change from pathological personality to abnormal personality, and finally destruct from flesh to soul. The deep meaning is to announce the human inner world will distract by the outside world. 相似文献