摆动

The different notes of a stringed musical instrument are made by vibrating the strings.

弦乐器的不同音调是使琴弦颤动而产生的。使摆动；以摆动计量

The influence of the instantaneous angle of attack and ST on the performance of propulsion is investigated.

以鱼类尾鳍摆动式推进模式为背景，对二维刚性和柔性水翼摆动运动的非定常水动力性能开展了数值计算，将刚性水翼的计算结果与实验值进行了对比，吻合较好。

Based on the analysis of sway angular velocity and sway angular acceleration of every branch during the movement of movable platform, the effect of additional force and moment of every branch on movable platform are calculated.

分析了动平台运动过程中各个支链的摆动角速度与摆动角加速度，在此基础上考虑了各个支链对动平台的附加力与力矩作用。

Intelligent artificial leg consists of knuckle, an executive mechanism, an anklebone, a foot and an intelligent controller. The executive mechanism controls the bent and stretchs movement of knuckle and the pendular movement of calf. The key components of the intelligent artificial leg are the executive mechanism and the intelligent controller.

智能人工腿主要由膝关节、控制膝关节屈伸运动及小腿摆动的执行机构、踝关节、脚以及智能控制器等组成，其最关键部件是控制膝关节屈伸运动及小腿摆动的执行机构和智能控制器。

To improve the braking work of the swing arrestor used at the end of the marshalling yard,the mechanical property,the stroke of cylinder and the braking work is discussed.

为了提高铁路编组站尾部摆动式停车顶的制动能力，分析了摆动式停车顶的力学性能、油缸的行程和制动功，通过选择θ角的数值，来实现停车顶合理的衬套磨耗和较大的制动能力，从而提高车辆通过的安全系数和车辆编组作业效率。

Ciliary beat frequency was measured by digital high-speed microscope. results ciliary beat frequency of cultured human nasal epithelial cells is 10.39±1.80 hz at 25℃. ciliary beat frequency of different cilia is equal on the same cell,it is also equal from uncinate process and inferior turbinate.

结果 在25℃，体外培养的人鼻腔黏膜纤毛摆动频率是10.39±1.80hz；同一细胞任意两点纤毛摆动频率是相同的；同一来源的体外培养的钩突和下鼻甲的纤毛摆动频率是相同的。

The simulation results show that the improved asway mechanism can complete the asway process in 0.4 s with a more accurate asway angle, which proves that the servo electromotor driven asway mechanism is reasonable and can provide a reliable theoretic basis for optimizing the structure of the laser cutting fracture splitting notch machine.

仿真结果表明，改进后的摆头机构可在0.4s内完成摆头动作，且摆动角度调整方便，说明改进后的摆动机构是较理想的激光头摆动方案，可为连杆初始裂解槽激光加工主机结构优化提供可靠的理论依据。

This paper studied the relationship between impulsive moment of radial tidal current and Alai phenomena, and concluded that: M acting on the earth's axis inspires Chandler wobble; the change of M depends on the interaction of the water, tidal force and the effects of the earth's rotation; under certain conditions, M changes dramatically during eclipse, which makes the amplitude of Chandler wobble change in the form of pulse.

本文研究了径向潮流冲量矩M与阿莱现象的关系，得出的结论是：M作用于地轴激发了Chandler摆动；M的变化取决于海水、引潮力和地球自转效应的相互作用；日食或月食期间，在一定的条件下，M变化的非常剧烈，引起Chandler摆动振幅脉冲式的变化，进而引起地球纬度的变化，最终导致地球表面重力加速度的变化；这种变化可以通过傅科摆摆动平面角速度的变化或重力计的示数变化反映出来。

The main technical parameters which decide the movement speed are the ankle angle of the support leg, the horizontal velocity, the hip angle and the support leg's hip joint angle, knee angle and the former support distance at the moment of contact, and the latter leg's hip joint angle, the upper arm's movement scope, the support leg's knee angle, the swing knee's angle, the support leg's hip angle at landing phase, and the ankle angle, the support leg's hip angle, the swing velocity of the former leg, the hip angle of the swing leg and the angle of the landing knee at the pushing phase.

我国优秀男子百米途中跑着地瞬间对动作速度起主要贡献的技术指标是：支撑腿的踝关节角、着地瞬间脚的水平速度、大腿夹角及支撑腿的髋角、膝角和前支撑距离；垂直缓冲瞬间是摆动腿髋关节角、上臂前摆幅度、支撑腿和摆动腿膝关节角、支撑腿髋关节角；后蹬瞬间是踝关节角、支撑腿髋关节角、大腿前摆角速度、摆动腿的髋角及支撑腿膝角。

Then, based on the consideration of decreasing impact force by correcting the robot swing foot motion error, develop a fuzzy compensate control strategy for swing foot landing. The motion control commands of pitch DOFs of hip joint, knee joint, and ankle joint of swing leg are gradually compensated online.

并基于调整机器人摆动脚运动误差以减小步行碰撞力的减振思路，提出了摆动脚落地补偿控制策略，在线分级实时补偿摆动腿的髋前摆、膝前摆和踝前摆的运动角度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。