查询词典 reciprocating motion

To investigate a nonplanar stellar motion deviating from the planar one, we approximately consider the motion as a bi-dimensional harmonic oscillator perturbed by higher order terms, so we obtain Henon-Heiles potential, which is nonintegrable.

为了研究试验粒子偏离赤道平面的运动，把整个运动近似地看成受到高阶微扰的二维谐振子，这时系统有不可积的Henon-Heiles势函数。

There was no statistically significant difference in parameters of IVS motion between obstructive and nonobstructive HCM.The data of hypertrophic LVPW motion were lower than those of normal subjects,as well as those of nonhypertrophic LVPW in HCM group.

左室后壁肥厚者收缩期及舒张早期的DTI测值多低于正常，而左室后壁不肥厚者收缩期指标无明显变化，舒张早期指标低于正常；两者相比，前者收缩期及舒张早期各参数多低于后者。

The working principle of the deployment control mechanism of appendages is investigated in detail, the feedback control model is established. And the effect of parameters to synchronized motion is discussed, in addition the nonsynchronous motion is investigated through the analysis of the principle for deployment control mechanism and driving mechanism and simulation.

针对在工程实际中发现的帆板展开运动不同步现象，本文详细分析了最常见的附件展开控制机构—CCL的工作机理，建立了CCL的反馈控制模型，并给出其具体的数学表达式，讨论了机构参数对帆板运动同步性的影响，进而通过对展开控制机构和展开驱动机构的机理分析和数值模拟讨论了帆板的不同步现象，并提出了减小不同步量的策略。

The larger subharmonic component will be introduced into the system after the instability of system periodic motions, the motion of systems will be nonsynchronous precession and the amplitude of alternate stress in the rotor shaft is high. The long-term existence of instability will directly threaten the safe running of the rotor systems. Research on the influence of the change of system parameters on the system dynamical behaviors, the stability of system periodic solutions with the change of system rotational speed and the system motion after instability will have the theoretical and engineering-oriented significance for the long-term safe running of large-scale rotating machinery.

转子系统失稳后会产生较大的低频振动分量，系统运动出现非协调进动，系统转轴中会产生幅值很大的交变应力，转子失稳状态的存在直接影响系统的安全运行，因此研究转子系统自身参数的变化对系统动力稳定性的影响，研究系统周期解随工作转速的变化情况及其失稳后的运动规律，对大型旋转机械的安全稳定运行具有重要的理论意义和工程实用价值。

Force is defined to be the cause of " unnatural " motion, that is, nonuniform motion.

力定义为&非自然的&、即非均匀运动的原因。

While the motion is nonuniform, complex motion compensation process must be applied to achieve focused ISAR image.

当目标具有固定的旋转速度时，运用传统的ISAR成像方法就可以得到目标的清晰图像。

We upgrated the Visual Motion Priming model proposed by Pantle, that means to insert a blank frame between priming and target. The goal is to explore the mechanism of visual motion priming in the brain. Method: Undergraduates on campus participated the experiments as paid volunter with normal or corelected normal version.

因此本实验对Pantle的视觉运动启动实验模式进行了改进，由特定运动方向的启动刺激引导靶刺激，在启动刺激与靶刺激之间加入一个空白阻断图片，从而打断启动——靶刺激的正常启动序列，目的是观察加入空白阻断图片，对于运动启动现象的影响以及对不同的视觉运动序列运动方向的影响。

Objective: To design color motion perception perimetry method and to observer the change of motion perception from neuropathy.

目的：建立彩色运动觉视野检查方法，观察视神经病变患者运动觉的变化。

In this thesis, the problems of motion control and perturbance restraint to a wheeled mobile robot with holonomic constraints including uncertain inputs, the pop problems in the field of motion control to mobile robot in recent years, are investigated deeply and thoughtfully.

本文针对近年来在移动机器人运动控制方面的热点问题——包含不确定扰动输入的完整约束轮式移动机器人的运动控制和干扰抑制问题——进行了深入和细致的研究。

To investigate the dynamic stability of a two-degree-of-freedom manipulator as a system,differential equations of motion for this system were established on the basis of the Lagrange equation,and perturbed differential equations with period coefficients were derived for the period motion of this system by applying the perturbance theory.

为了研究两自由度机械手系统的动力学稳定性，基于拉格朗日方程给出了它的运动微分方程，并用扰动理论确定系统周期运动具有周期系数的扰动微分方程；根据F loquet理论对该系统扰动微分方程的平衡点的稳定性进行了分析，并用数值方法研究了平衡点失稳后的倍周期分岔过程。

Finally, the Knight strung a line between two of the monoliths and tied the horses up there.

最后，骑士们在两颗巨石之间拉了一条绳子，将他们的座骑绑在上面。

T7zN/hyS0 The island lies south by east from here.

那个岛位于此地的正南偏东方向。