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运动

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The third chapter is on the Soviet Union's collectivizational campaign, including the background, reasons and characters of collectivi zational campaign, comprehensive collectivizational campaign and characteristics of the Soviet collective farm management system, the evolution of the Soviet collectivizational farm.

第三章介绍苏联的农业集体化运动,包括苏联集体化运动的背景,苏联全盘集体化运动的发动及其特点,苏联集体农庄的演变及其管理制度,对苏联全盘集体化运动的评价等内容。

The Adolph accurate dynamic model cannot describe the movement of the reciprocating pump valve at the moment of opening, thereby a new accurate dynamic model for describing the motion law of an automatic conical valve is set up, in consideration of the condensability of the fluid, the Westphal's effect, the condition of the continuous flow of fluid and the dynamic characteristic of pump valve's motion.

针对阿道尔夫往复泵泵阀精确运动微分方程在泵阀开启瞬间存在奇点的不足,综合考虑液体可压缩性、魏氏效应、液体连续流条件及泵阀运动的动力特性,建立了描述往复泵自动锥形阀运动规律的精确运动微分方程。

Several crite- rions are presented relying on all possible instances for third-order profile planning. Based on these criteria and dynamic constraints, fast and accurate algorithm of profile planning with time-optimality by preprocessing the entire profile as a whole is described. Ac- curacy losses in discrete time implementation are considered.

这类运动对精度和效率的要求极高,甚至要求纳米级精度,而轨迹规划是超精密运动的重点和难点之一,其轨迹规划精度直接决定了运动精度和性能,因此,与此相适应的快速精确的轨迹规划算法成为了现代超精密运动系统必须解决的问题,是提高竞争力的必要手段。

In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts; for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry , says York Onnen, program director of the President's Council on Physical Fitness and Sports

一些人或许是由于热量耗费图表而被大大的挫伤了信心,在拒尽运动的过程中。例如,一个人必需要轻快的行走3英里,仅仅来耗费由一块可口的丹麦小甜饼所产生的275卡热量。甚至就连专业的运动人士对此也不得不部分地承认。"运动本身就是一种很艰苦的减肥方法。"美国总统身材健康和运动委员会的项目主管,约克?昂尼说。

51 Yrs ones were the diabolo comparison group. The experimental group had to participate in rope-jumping or diabolo exercise training, consisting of 60 min/session, 3 times/wk, for 16 consecutive weeks.The intensity of rope-jumping exercise is between " Hard (15)"and" Very hard (18)"and the intensity of diabolo exercise is between "Somewhat Hard (13)"and"Hard (16)"by rate of perceived exertion scale.

跳绳及扯铃实验组的受试者必须接受每周3次,每次60分钟,共计16周的训练,以运动自觉量表设定运动强度,分别为:「很累(15)」和「非常累(18)」之间的跳绳运动训练及「有点累(13)」和「很累(16)」之间的扯铃运动训练。

Built up dimensional reference frame and vector equation of movement model of orthogonal turn-miling.

为了提高数控车铣的编程效率,论述了正交车铣运动的特征,同时通过对正交车铣运动过程的分析,建立了一个描述其运动的空间坐标系,从而建立了正交车铣运动模型的矢量方程。

Content question: there is no space in the universe, we observed with space is matter and field components space, the expansion of space is substances and substances in the expansion of the field, all moving substances and substances will be in a field-the-field sport, including light and electromagnetic waves, like automobile from the disconnexion in the same way, there is no absolute vacuum of space, there is no absolute coordinate system, all substances campaign has been relative motion.

内容题要:宇宙是没有空间的,我们观测的空间是物质和场物质组成的空间,空间的扩大也是物质和场物质在扩大,所有运动的物质和场物质都会在一个场上运动,其中包括光和电磁波,好象汽车离不开路一样,不存在绝对真空的空间,也没有绝对坐标系,所有物质运动都是相对运动

The motion design of follower includes selection of motion law and distribution of motion duration for each motion phase.

从动件的运动设计包括各运动阶段运动规律的选择和运动时间的分配。

The results show that the microstructure of ventra1 scale for python was composed of micro-convex and plank structure that was periodically arranged, it was mensurable and could be described by 9 characteristic parameters. Its surface was different in their forward and backward lean angle. The frictional coefficient of the ventra1 scale had closely relationship with moving direction, it decreased with the increasing load. The value of the frictional coefficient was about 0.07. The frictional coefficient while python moved backward and laterally were equal, and that was 33% more than that moved ahead. The frictional force of the ventra1 scale surface was caused by mechanical tooth function of micro-convex, acting intermolecular force and material's elastic hysteresis. The difference of forward and behind bevel for micro-convex was the anisotropy reason of frictional force.

结果表明:腹鳞表面的微观结构由指状微突体和板结构部分周期排列而成,其结构可用9个特征参数定量描述;腹鳞表面摩擦力由分子作用力、表面微突体的犁沟力、楔形作用力以及材料弹性滞后共同引起;腹鳞表面的摩擦系数在0.07左右并与运动方向有关,摩擦系数随载荷增加而减小;后向运动及左、右侧向运动时摩擦系数基本相等,比前向运动时高33%左右;腹鳞表面微突体不同方向上倾斜角度的差异是引起摩擦各向异性的主要原因。

Based on Crank-Nicoson's technique, and a new approach for the numerical simulation of the model is raised. The truncation error of the one step difference method reaches O (△t^2+△x^2) and of quite good stability condition.

基于Coriolis加速度和Lagrangian应力公式,利用Newton第二定律导出轴向加速度运动弦线横向振动的动力学模型;通过线性变换将方程化为一阶无量纲的非线性微分方程组;并利用Crank-Nicoson的中点离散技巧,给出运动方程的单步二阶差分方法;算法把对运动方程和本构方程分别离散,使之可以用于不同本构的运动弦线的数值仿真。

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推荐网络例句

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援,我们正徵召国家所有各种的力量:我们的外交及发展,我们的经济力量与道德劝说,所以你们与其他军人不须要孤独地负起国家安全的责任。

Imagine yourself to be an actor in a play on the stage.

设想你自己是一个演员在舞台上表演。