查询词典 variable speed

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The main content of the study includes: the policy variables are classified into two types, which are continuous policy variable and discrete policy variable, and the two variable is analyzed respectively; as to the continuous policy variable, use reasonable weighting to synthesize comprehensive policy indicator to reflect the comprehensiveness of each main policy indicator; undertake regression analysis for the comprehensive policy indicator, economic and stock market variable and get the effect of all kinds of comprehensive policy indictor variables on the economy and stock market; undertake regression analysis for data on the economic indicator and the data on the stock market and get the relationship between the economy and the stock market; use event research method to analyze its effect on the stock market and get some corresponding conclusions; structure the differential or difference equation groups on the interactive relationship among the variable economy, stock market and policy and do the difference operation and constitute simultaneous equation with the original main variables one after another; use quantitative regression method and solve the coefficient of the simultaneous equation to predict the operating tendency.

本研究主要内容包括：将政策变量划分为连续性政策变量和离散政策变量两个类型，并分别进行分析；对于连续性政策变量，采取合理的权重来合成政策综合指标，反映各主要政策指标的综合力度大小；将各政策综合指标与经济、股市变量进行回归分析，获得各类政策综合指标变量对经济、股市影响程度的大小；将经济指标数据与股市数据进行回归分析，获得经济与股市之间关系的大小；采取事件研究方法来分析其对股市的影响程度；构建关于经济、股市与政策各主要变量之间互动关系的微分或差分方程组，进行差分运算，并以此与原来各主要变量组成联立方程；运用计量回归方法，求出联立方程系数用于预测。

Furthermore, transfer coefficient between total content and variable speciation including acid-soluble/exchangeable, reducible, oxidisable fraction of heavy metals are different. Transfer coefficient of total Cr is 0.65 in tailings area, but that of variable speciation is 0.26. In contrast with Cr,transfer coefficient of total Ni is 0.26, but that of variable speciation is 0.67. The similar characteristics on Pb and Zn in cultivated soil, namely, transfer coefficient of total Zn is high, but low for variable speciation, which is reversed for Pb. Transfer coefficient of total content and variable speciation in abandoned soil are low compared with above two fields soil, especially, variable speciation of Cu and Ni are not transported almost down soil profile.

重金属总量和活性态（包括弱酸提取态、可还原态、可氧化态）迁移率也表现出很大差异，尾矿区土壤Cr总量迁移率较高为0.65，而其活性态迁移率较低为0.26，Ni与Cr迁移特征完全相反，总量迁移率为0.26，而活性态迁移率为0.67；农田土壤中Pb总量迁移率低而活性态迁移率高，Ni与Zn特征相似，总量迁移率高而活性态迁移率相对较低；大棚地土壤中重金属迁移率均较低，Cu和Ni活性态几乎未发生向下迁移。

In order to improve the tower crane working efficiency, windlass mechanism has a set of gear change mechanism, are devided into high speed,mid speed and low speed, the gear change mechanism gained three speed through connecting 2 DLM5-40A and 1 DLM5-63A brake, control 3 brake by LHK switch,when it with the function of low-speed heavy-load, get through the model DLM5-63A brake; when it with the function of mid-speed mid-load and high-speed light-load, get through the model two DLM4-40A brake, and the operator can choice the good position as the weight of the goods, when change the speed, must be cut off the motor, 26 FUSAN CONSTRUCTION MACHINERY CO.,LTD PDF 文件使用"pdfFactory Pro"试用版本创建 www.fineprint.cn FUSHAN TOWER CRANE OPERATINGINSTRUCTIONS-QTZ125G(FS6016) no change speed when driving it.

为了提高塔机的工作效率，卷扬机构设有一套变速装置，分重，中，轻三档，变档装置是通过分别接通两个 DLM5-40A 和一个 DLM5-63A 电磁离合器来获得三种速度。用转换开关 LHK 控制三个电磁离合器，重载低速时，接通 DLM5-63A 电磁离合器，中载中速和轻载高速时，分别接通其余两个 DLM5-40A 电磁离合器，司机可根据物品的重量选择合适的档位，换档时，必须使电机断电，不允许在电机运行过程中换档。

Through analysis and comparison on speed rhythm in whole process of the World Elite Women 400 m Hurdlers, selected the target that reflected the characteristics of speed rhythm, and analyzed Correlation between speed indicators and results, showed that reasonably controlling the speed at 0-1 hurdle, the biggest hurdle speed is in favor of reducing the rate of decline on the speed of the after process, to maintain a relatively fast speed, speed changes is relatively stable, and is in favor of playing at the level in the speed.

通过世界优秀女子400m栏运动员全程速度节奏规律的分析与对比，筛选出部分反映速度节奏特征的指标，并对速度指标与成绩的相关分析表明，合理控制0-1栏速度、最大栏间速度有利于减少后程栏间速度的下降，使保持较快速度的距离延长，速度变化相对平稳，有利于更好地发挥速度水平。

For many years ,by adhering to the principle of customer foremost,Shanghai Saini Company has been always engaged in the production of R series coaxial hard gear surface column gear speed reducers, S series gear worm speed reducers, F series parallel axis gear speed reducers, K series spiral umbrella gear speed reducers, RV series worm speed reducers, MB, MBN planet taper disc stepless speed variators, WH/WB series high power gear speed reducers, cycloid pin gear speed reducers and other types of universal and special speed reducers.

多年以来，上海赛尼传动设备有限公司秉着客户至上的原则，专业生产WR系列同轴式硬齿面圆柱齿轮减速机，WK系列弧齿锥齿轮硬齿面减速机，WF系列平行轴斜齿轮减速机，WS系列圆柱蜗杆减速机，RV系列蜗杆减速机，MB、MBN行星锥盘无级变速机等其他类型通用的和专用的减速机，被广泛应用于舞台机械、食品、包装、陶瓷、制药、纺织、环保等诸多领域。

By the use of Circling cluster and Envlopment theory and flat surface sit-mark transformation theory, the chain wheel tooth equation of roller chain at high speed to match conjugage engagement is deduced.Establishing chain speed equation of roller chain at high speed,based on the analysis of the speed curves between roller chain at high speed and common roller chain,good drive of roller chain at high speed is verificated theoretically.By a example that move distance from transverse vibration between roller chain at high speed and common roller chain is contrasted,the accuracy of those theories that the paper brings up and higher functions of roller chain at high speed is proved.Finally, Establishing conjugage engagement line equation of roller chain at high speed and analyzing the complete engagement zone, the chain wheel tooth curve equation is studied at a higher degree. At the same time,the lack's place of the research result is pointed out.

依据高速滚子链设计要求与H_y-V_0齿形链的研究，阐述了滚子链传动实现准共轭啮合理论可能性；利用圆族包络法结合平面坐标变换理论推导出了满足共轭啮合的高速滚子链的链轮齿廓曲线；建立起高速滚子链链速方程，通过对高速滚子链与普通滚子链链速曲线的对比分析，从理论上验证了高速滚子链具有良好的传动性能；最后，建立起高速滚子链共轭啮合线方程，对其整个啮合区间进行了分析，进一步研究了链轮齿廓曲线方程，确定了主要参数的设计方法的问题，并同时指出了不足之处。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

This article analyzes the working theory and the working forces of the drive wheel, pyramid wheel and outer ring during the transmission process. It also deduces the practical calculation formula of the pyramid wheel type variable speed drives, it also goes on the material calculation aim at the selection parameter. It protracts the assemble-drawing of the pyramid wheel type variable speed drives and the accessory-drawing of the mostly drive component. So it can express more clearly of the structure and process planning of the variable speed drives.

本文分析了在传动过程中变速器的主动轮、菱锥、和外环的工作原理和受力关系；详细推导了实用的菱锥锥轮式无级变速器设计的计算公式；并针对设计所选择的参数进行了具体的设计计算；绘制了所计算的菱锥锥轮式无级变速器的装配图和主要传动元件的零件图，将此变速器的结构和工艺等方面的要求表达得更为清楚。

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

You have to walk your own alk in this life.

次生中你必须走自己的路。

To start with, the thesis analyses ***ism in terms of the generic masculine words, word order and semantic derogation of women in greater detail.

论文首先从阳性词泛指，词序，词义的贬降等方面对英语中的性别歧视现象进行了详细的分析。