查询词典 reciprocating motion

From the established manipulating kinematics equation, the kinematics determinacy of multi-fingered hand manipulation is systemically discussed, and the analytic formulae of joint self-motion and the contact motion caused by the joint self-motion are given.

从得到的运动学方程出发，分析了多指手滚动操作的运动学确定性问题，给出了关节自运动及由其生成的接触点运动的显表达式。

The motion of the fluid flowing through a SKstatic mixer in laminar flow can be resolved into rotary motion and straightline motion, so we can respectively calculate the flow resistance of the two motions.

将流体在静态混合器中作的层流流动分解为直线运动和旋转运动，然后分别计算这两种运动在流管中的流体阻力，并将两者相加后得到SK型静态混合器中液体层流流动时流体阻力的计算式。

Computer micro-vision, Mirau microscopic interferometry, stroboscopic photography and laser Doppler vibrator are integrated into this platform. In-plane and out-of-plane periodic motion characteristics of micro-resonator are measured, and out-of-plane transient motion of micro-mirror is analyzed. In-plane displacement, motion phase and resonance frequency can be measured by integrating computer micro-vision with stroboscopic photography, and the repeatable accuracy of in-plane displacement is 30 nm.

实验结果表明，利用计算机微视觉和频闪成像技术能够实现微结构的平面位移、运动相位及谐振频率等周期运动参量的测试，位移的重复精度为30 nm；利用显微干涉和频闪成像技术可实现微结构的离面位移及表面扭曲等周期运动参量的测试，位移的重复精度为3 nm；激光多普勒测振技术具有在频域上对微结构瞬态运动进行分析的优点，是时域上周期运动测试的重要补充。

The paper analyzed the motion principle of an end-face lapping machine for an optical fibre conneetor,and deduced the expressions for the workpiece′s motion path in relation to its lapping plate and the motion path vise versa,both of which,as shown by Eqs(5) and(6) in the full paper,are trochoid .

推导出工件相对于研磨盘的运动轨迹S1和研磨盘相对于工件的运动轨迹S2的表达式，得出S1、S2均为次摆线，分析了轨迹随相关参数的变化规律。

Numerical simulations were done for a bistable latch valve of the system by FLUENT, and three groups of datum for different fluids were obtained with the same effective exit sectional area. Besides, a static mathematic model for the electromagnetic valve was established based on the obtained datum. Secondly, the motion of the valve spool was realized by UDF file in FLUENT. Three kinds of motions, uniform, acceleration and motion driven by the coupling effect of the liquid resistance and the electromagnetic force, were calculated and compared. The dynamic characteristic of the electromagnetic valve was obtained by analyzing the relationship of the mass flow rate of the inside flow field of the electromagnetic valve, the change of the drop pressure of the passageway of the valve, and motion time.

并针对系统中的某双稳态电磁阀，使用商用CFD软件FLUENT对其进行内部流场的数值模拟，通过使用不同流体介质，不改变阀门有效出口截面积的情况下，分析得到的三组数据，建立了该电磁阀的静态数学模型；通过编写UDF文件，实现对阀芯运动方程的控制，在阀门做由闭合到开启、开启到闭合运动时，控制阀芯分别做匀速运动、匀加速运动以及阀芯受到液体阻力与电磁力作用力的耦合力的运动，分析了三种工况下电磁阀内部流场质量流率和阀门出口入口压降的变化以及运动时间，从而得到该电磁阀的动态特性。

Healthy volunteers participated 6 experiments that were designed to test the sensory conflict theory of motion sickness, to observe the effect of the outside proprioceptive input on motion sickness and to make sure the influence of motion sickness susceptibility, automatic nerve activity and breed on experimental nausea and vomiting. The results were as follows: 1. Different intensity of visual and vestibular sensory conflict effected the onset of vection and rotation toleration time and the symptoms of nausea and vomiting, the more intensive of confliction, the more quickly onset of vection, the more short rotation toleration time, and the more serious symptoms of nausea and vomiting.

本研究针对上述问题设计了6个实验，以200名健康成年志愿者为被试，以转椅和转鼓作为诱发实验性晕动的装置，采用恶心评定量表、恶心问卷和晕动敏感史量表及自我运动错觉和旋转耐受时间为指标，旨在考察：（1）实验性恶心、呕吐症状的时间变化规律；（2）不同强度感觉冲突、不同体位因素对实验性恶心、呕吐的影响，验证晕动的理论假设；（3）晕动敏感史差异、人格因素、种族因素与实验性恶心、呕吐的关系。

The Chinese machines converted rotary motion into longitudinal motion, because they started with the water-wheel, whereas the European machines converted longitudinal into circular motion, but in all other respects they were identical.

中国机械把圆周运动转换成直线运动，因为一开始使用的就是水轮；反过来，欧洲机械则把直线运动转换成圆周运动；两者在其余各方面基本上完全一样。

More flexible Motion Tracker Zero in on any element with the enhanced Motion Tracker, which lets you use as many points as you like or standard one-, two-, and four-point settings; track change in scale or just horizontal or vertical movement; and edit the motion path.

自由的运动轨迹追踪器允许用户设置一个或多个追踪点，观察大小、基准线变化，甚至可以编辑运动路径。

A new fast motion estimation algorithm based on moving direction prediction is presented, in which the high correlation of adjacently blocks'motion vectors and the center-biased characteristic of motion vectors in image sequences are used.

利用序列图像的相邻块运动矢量的高度相关性和运动矢量的中心偏移特性，提出一种基于运动方向预测的快速运动估计算法。

The general conclusions resulting from our research are that the fast motion of the system can be separated from the slow motion of the environment or the detector. When the motion of the environment or the detector satisfying the classical limit condition, the adiabatic states of the system decohere to lose its its quantum coherence.

本章的研究表明：在Born-Oppenheimer近似下，快变的量子系统的运动可以绝热地从慢变的环境的运动中分离出来；当环境的运动满足某种经典极限时，量子系统的不同绝热态分支之间量子退相干。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。