过程
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The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.
在弯曲关节模型推导的基础上,建立扭转关节的静态模型,并分析了扭转关节内腔压力,初始转角,橡胶管平均半径,橡胶管壁厚等参数对关节转角的影响,得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系,扭转关节的转角随初始角度和橡胶管平均半径的增大而增大,扭转关节的转角随橡胶管壁厚的增大而减小的结论;建立了扭转关节的动力学方程,仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短,在实际系统设计和控制过程中可以忽略不计;分析讨论橡胶管壁厚,平均半径,初始角度,气体节流口面积,转动惯量,粘性阻尼系数等因素对扭转关节动态特性的影响,得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显,壁厚较小时,关节可以得到较大的转角,并且转角的响应曲线没有超调,但上升时间长,壁厚较大时,关节转角变小,响应加快,但是有超调和轻微振荡现象,橡胶管平均半径越大,得到的关节转角越大,但是转角响应的超调量也随之增大,FPA的初始角度越大,关节的转角越大,并且超调量减小,振荡减弱,但是上升时间增大,管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大,但对关节转角的动态响应几乎没有影响,转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。
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It also gives the definitions and stochastic properties of pure random process, random walk process and AR(1) autoregressive process, and analyses the simulative data of three typical random processes using wavelet analysis, frequency spectrum analysis and time-correlation analysis. The stochastic properties of time series and the trend component, the time length of time-correlation and the properties of main frequency of these three typical random processes are summarized as the templates for further research.
给出了包括纯随机过程、随机游走过程和 AR(1)自回归过程等在内的基本随机过程的定义和统计特征,并运用小波分析,时间相关和频谱分析对这三种基本随机过程的模拟数据进行分析,归纳出它们在时序上的随机特征、低频信号趋势项特征、时间相关的长短以及主频信号的位置等特点,作为研究 GPS 接收机误差和多路径效应的随机特征的模板。
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To increase the infusion efficiency, the coal surface wetness course has been analyzed with the interface chemistry theory, which involves the course of bedew, soakage and .
分析了煤层注水过程中水在煤体中的运动动力和过程,用界面化学理论分析了煤体表面的润湿过程,得出了煤体能够自行润湿的条件,即润湿过程的润湿功必须为正,同时得出了各种润湿过程的判断依据。
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On the basis of some elementary theories about Galton-Watson branching process, the bisexual Galton-Watson branching process and the branching process with random environment are introduced in the paper.
本文在介绍GW分支过程一些基本理论的基础上,又介绍了两性分支过程模型及随机环境分支过程模型,并以两性分支过程为前提,研究了带配对函数L=x的两性分支过程{Z_n}。
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Based on this result, and combined with mathematical models for describing the quenching process, the temperature, microstructure and stress field in quenching process were simulated by the FDM, the variation of microstructure and stress in quenching process was analyzed, and effect of the carburization on them was also analyzed.
基于渗碳模拟结果,根据描述淬火过程的数学模型,利用有限元法对试样淬火过程的温度场、组织场及应力场进行了数值模拟,分析了淬火过程中组织和内应力变化,及渗碳过程对淬火过程组织及应力变化的影响。
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It mainly studies the choice of mode for competitive tender offer under different bidders' type.
首先,借鉴Perry,Wolfstetter和Zamir(2000)的有关理论,从基于两阶段密封价格投标的竞争性要约收购过程开始,讨论了其中的一些性质,结果表明,同质收购者前提下该过程不但能够获得和基于英式竞价的竞争性要约收购过程相同的期望收益,还能够克服后者存在的一些问题;随后,在异质收购者内生参与条件下就基于英式竞价和密封投标的竞争性要约收购过程进行了比较研究,得到了不同方式下收购结果的特征;最后,针对异质收购者不同知情程度的情况研究了竞争性要约收购方式的选择问题,借鉴Povel和Singh(2004)提出的机制,得到了具备"胡萝卜加大棒"性质的序贯出售过程是这种情况下控股股东的最优选择。
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The paper first constructs the relating technology framework between coal low temperature self-heating thermal properties parameters and spontaneous combustion, by means of testing on coal samples of diffusibility relative to oxygen, gas-producing simulation in self-ignition process, adiabatic oxidation process, coal spontaneous combustion processing simulation, coal basic physical and chemical parameters, thermal analysis by differential scanning calorimeter , differential thermal analyzer , Thermogravimeter .
通过对试验煤样进行煤对氧的扩散特性试验、煤自然发火过程中气体产物模拟实验、DSC差示扫描量热热分析测试、DTA与TG热分析测试、煤自然发火绝热氧化过程试验、煤自然发火过程模拟试验、煤基础物理化学参数测试的试验研究,就煤对氧的扩散与吸附特性、煤自燃氧化过程中的热力特性与气体产物特性及其与煤自然发火过程之间的相关特性进行了较系统的研究,初步建立了煤低温氧化自热热物理特性参数与煤自然发火之间相关联的技术内涵。
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On the basis of the kinetic equation of substrate reaction in the presence of urea or guanidine hydrochloride, all microscopic kinetic constants for the free enzyme and enzyme-substrate binary and ternary complexes have been determined. The results of the present studies indicate that:①In the presence of urea or guanidine hydrochloride, enzyme-substrate complexes lose their activity less rapidly than the free enzyme. Therefore, both substrates, NADPH and 7, 8-dihydrofolate, protect dihydrofolate reductase against inactivation.②The denaturation of dihydrofolate reductase by urea follows single-phase kinetics, and changes in enzyme activity and tertiary structure proceed simultaneously in the unfolding process, so it may be an"all or none"process.③The GdnHCl-induced unfolding of the dihydrofolate shows a biphasic transition, while the change in the enzyme activity is a single exponential process. The rate constant of inactivation is consistent with that of the fast conformational change. Therefore, the kinetic intermediate of protein unfolding should be a partially folded and inactive form.
我们根据在脲或盐酸胍存在下的底物反应动力学方程求得游离酶和酶底物二元、三元复合物的微观动力学常数,结果表明:①酶-底物二元、三元复合物的失活速度明显慢于游离酶,说明两个底物二氢叶酸和NADPH对酶的失活都具有一定程度的保护作用;②在脲作用下,酶的失活和构象变化均为单指数项过程,而且酶的活力丧失和三级结构变化是同时发生的,说明二氢叶酸还原酶的脲变性可能是一个"全或无"的两态过程;③在盐酸胍作用下,酶的构象变化为两相过程,而失活则是单指数项过程,酶分子构象变化的快相速度常数与失活速度常数基本一致,因此我们认为二氢叶酸还原酶的盐酸胍变性过程中存在一个没有活力、但仍具备一定空间结构的变性中间体。
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On the basis of these theories , the author brings forward a new perspective of research. Furthermore, all the demonstration establishes the theory basis for the latter positive study, and the author solves the practical problem by means of positive results. 2.This paper puts forward the management model "cardiogram of the capital returns change process". The author compares the capital returns change process with heart-throb, and introduces the system of firm's value creation.
提出了"资本收益运动过程心电图"的管理模型,将资本收益的运动过程形象的比拟为心脏搏动的动态过程,形成了企业价值创造系统,运用价值链理论,通过鱼刺图价值分解法从平衡计分卡的四个维度来梳理和明确企业价值战略目标,将价值运动过程的驱动因素逐步分解,尤其是从人力资本的视角探讨了智力资本在资本收益过程中的重要作用。
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The psychology the processing process will usually divide into the controllability processing process and the automatic processing process, this experiment through to will count along the number research and the inverse number research, further explained along number more participation will be the automatic processing process, but the inverse number more will be the controllability processing process, will need to realize attention.
心理学通常将加工过程分为控制性加工过程和自动加工过程,本实验通过对数数的顺数研究和逆数研究,进一步说明顺数更多参与的是自动加工过程,而逆数更多的是控制性加工过程,需要意识的注意。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。