查询词典 equation of motion

From the equation of motion, it is possible to estimate the total impulse of the motor, knowing the altitude achieved, burn time, ascent and descent time, etc. But how can drag be neglected and still arrive at a reasonably accurate estimate of the performance?

从运动方程，是有可能的估计总数冲动的汽车，知道高原所取得的，燃烧时间，上升和出身的时间等，但如何可以拖动被忽视，仍然得出一个相当准确估计的表现呢？

The separate velocity decides the shape and size during the sphere phase. Linear relative motion differential equation can be used to reduce the debris density model. Rope and spiral is distinguished from geometry, orbital maneuver theory is used to analysis the existence of pinch point and pinch line.

在球形阶段起主要作用的是分离速度；椭球形阶段可以利用线性化相对运动方程进行分析；绳形与螺旋线形在几何上有质变，但都有结点和结线，并可以利用速度增量理论分析和解释其存在的原因。

To more briefly calculate the accurate solution of the hangingpoint motion parameters of the beampumping unit,the walking beam's swing equation according to the geometry relationship and movement characteristic of the four pitmen mechanism in the beampumping unit is found.

根据游梁式抽油机四连杆机构的几何关系和运动特点，建立了游梁的摆动方程，并由该方程得出了游梁摆角变化规律以及悬点运动的位移、速度和加速度的计算公式，从而给出了求游梁式抽油机悬点运动参数精确解的一种计算方法。

In the first part, one of the multibody system theories and methods— Huston's method based on Kane's equation is systematically summarized. By using this method, the existing design problems of two main machines—wheel loader and hydraulic excavator in the field of construction machinery have been solved, and also the software KDOSCM which includes multibody system kinematic and dynamic analysis, optimization , motion simulation and static force analysis is developed for construction machinery.

上篇在系统总结基于Kane方程的Huston方法的多体系统理论和方法的基础上，侧重于运用该方法解决工程机械领域中的两大主要机型—轮式装载机和液压挖掘机在设计中存在的问题，同时开发研制了可用于对工程机械进行多体系统运动学、动力学分析，优化设计、运动仿真和静力分析的软件包KDOSCM。

The particle valve model,obstacle cell valve model as well as the body-fitted valve model representing the valve motion were established.Furthermore,a modified equation about the particle valve model was put forward.

建立了反映气门运动的粒子阻滞模型、障碍物单元模型以及贴体气门模型，并提出计算粒子阻滞的修正公式。

Motion equation of swash plate pump with inclined pistons was analyzed and deduced. Taking into account the leakage and the com pr essibility of oil, the simulation model was established with AMESim.

摘 要：对斜盘斜柱塞泵柱塞的运动方程进行分析和推导，考虑到泄漏及油液的可压缩性等因素，并在此基础上利用 AMESim 仿真平台建立了斜柱塞泵的仿真模型。

The development of drill string mechanics is discussed from the perspectives of the introduction of the topic, the research objective, the methods employed for the research, the motion behavior of the drill string, the fundamental equation for of drill string dynamics, the tension and torque of the drill string, the elastic stability of the drill string, the stress analysis of the bottom hole assembly, the drill string vibration and swirling.

从钻柱力学问题的提出、研究目标、研究方法、钻柱的运动状态、钻柱动力学基本方程、钻柱的拉力扭矩、钻柱的弹性稳定性、底部钻具组合受力、钻柱振动与涡动等方面分析了钻柱力学的发展状况。

In this paper the equations of the stability and shear, flexural vibration of the straight bars with varying cross-section and the equations of motion of one degree of freedom systems with varying parameters are written as a unified self-adjoint differential equation of the second order eq.

本文将变截面杆的稳定与剪切、弯曲振动方程，以及具有变参数的单自由度体系的振动方程等均化为统一的二阶自共轭微分方程：并对，且的情形，将二阶自共轭方程化为贝塞尔方程。

In summary, various key experimental conditions in electron acoustic imaging of ferroelectric domains were systematically studied. The optimum experimental conditions to obtain EAI of domains with good quality and the factors important to image analysis have been presented. The piezoelectric vibrator model and calculation of motion equation are helpful for explaining the imaging mechanism and related experimental phenomena. The sample holder with variable electric field was designed. The domain movement of BaTiO〓 ceramics and crystal under lateral and longitudinal applied electric field and domain movement of PMN-PT crystal under longitudinal poling electric field were observed. The application of SEAM on revealing of ferroelastic domains, imaging of residual stress distribution in ceramics coatings and around the pores on the surface of ferroelectric ceramic composite have been reported respectively. All these works enriched the study of electron acoustic imaging and extended the application of SEAM in the characterization of materials.

综上所述，本文系统地研究了各项关键实验条件对电畴电声成像的影响，指出了获得最佳畴结构电声像的条件和成像分析中应当考虑的各种影响因素；提出了解释电畴电声成像的压电振子模型，在此基础上推导并求解了压电振子运动方程，并对一些实验现象作出了解释；成功地设计了可变电场的样品台，观察了BaTiO〓陶瓷和晶体在横向电场作用下的畴运动，PMN-PT晶体在纵向极化电场作用下的畴运动；探索了电声显微镜在铁弹畴成像，陶瓷涂层应力观察，陶瓷自然表面气孔周围应力成像的应用，这些研究，丰富了电声成像的学术内涵，拓展了电声显微镜的应用领域。

The thought of suppressing the vibration of structure with multi-part composite structure is put forward for the first time, the motion and control equation is derived, and the effect of vibration-reduction and its influential parameters are studied.

提出了利用多单体组合来抑制结构振动响应的思路，推导了其运动和控制方程，并对其减振效果和影响参数进行了研究。

I think people in this lifetime in a rebirth.

我觉得人在这一生里其实也在轮回。

He had to tie her hands together.

他不得不把她的双手绑在一起。