针对每个钢琴来说，每个琴丝在长度上都不同，并要获得不同的张紧力和刚度。
For every individual piano, each string varies by length and has to achieve different tension and stiffness.
即使是刚刚度过90岁生日的老弱人群，也能有办法增加他们身体的肌肉数量和肌力水平。
Even frail people who've already passed their 90th birthday can add muscle mass and strength.
为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。
To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.
通过分析端面结构参数对密封开启力和液膜刚度的影响规律，可得到端面结构的优化参数。
Seal face geometry parameters can be optimized by analyzing regulation of their effect on opening force and liquid film stiffness.
文中考虑了竖向力对群桩刚度的影响以及桩基承台水平位移与弯曲、扭转位移的耦合作用。
The effect of the vertical force on the pier stiffness and the interaction among the level, bending and torsion displacement is also studied.
螺旋槽干气密封试验分析了干气密封螺旋槽几何参数对开启力、功耗、泄漏率和气膜刚度的影响，并通过理论计算对试验数据给予了验证。
The influences of the spiral groove parameters on the opening force, power loss, leakage rate and stiffness of gas film were investigated by the experimental test.
几何非线性单元的精度主要决定于单元恢复力的计算方法，刚度矩阵对单元精度的影响很小。
Method for computing the element restoring force, rather than the stiffness matrix, is the most important factor that determines the accuracy of a geometric nonlinear finite element problem.
结构内部预紧力的大小和分布与结构的整体刚度、结合部位的局部刚度、过盈配合程度、接触面积等因素有关。
The level and distribution of the pre stresses are influenced by the general and local stiffness of the structure, the contact area and the press degree.
建立了考虑转子转速的新的碰磨力模型，分析了具有初始弯曲和刚度不对称转子系统的碰磨响应，得到了系统参数对系统分叉和混沌响应的影响。
A new model of rub impact force considering varied rotating speed was derived and the rub impact response of a rotor system with initial bending and asymmetric stiffness was analyzed.
根据承力密封框的使用环境和设计要求，确定了对其进行刚度和强度分析时所需的各种主要参数；
Simultaneously all the main parameters are determined according to the environment of fuselage airproof main frame and the design requirements in analyzing the rigidity and strength.
当列车从高刚度轨道到低刚度轨道时，钢轨垂直力、钢轨加速度、轨枕加速度是由大逐渐减小，没有突变。
When train runs from the rail of high rigidity to the rail of low rigidity, the rail vertical force, rail acceleration and tie acceleration gradually change from large to small.
结构层高与柱高宽比愈小，主要抗侧力构件沿结构周边布置愈分散、均匀，结构的抗扭刚度愈大。
The structural torsion stiffness will increase when the structure is taller and the column section ration of height to width is smaller.
主要研究了进行微小力测量时所需的重要参数——光阱刚度与实验条件的依赖关系。
In this paper, the results of the experimental study on the regulation are reported that the trap stiffness changes with experimental conditions.
再根据哈密顿原理导出了悬索大挠度振动的有限体积离散方程，推出了索的整体节点力向量、质量矩阵和切线刚度矩阵。
The final finite-volume discretization equations are derived using the Hamilton principle. Meanwhile the global nodal force vector, mass matrix and tangent stiffness matrix of the cable are obtained.
其中几何刚度矩阵由轴向力、双向弯曲和截面翘曲的影响组成。
The geometric stiffness matrix is composed by the effect of axial force, bending moment and bimoment.
弯矩—曲率恢复力曲线可以是任意的，而相应的单元刚度矩阵的建立较为简单。
The type of hysteresis loops can arbitrarily be chosen, and the corresponding element stiffness matrix can be built up in a simple way.
通过对油气弹簧非线性弹性力的深入分析，提出了可以将弹簧刚度简化成平方非线性的观点。
By the analysis of the nonlinear force of the hydro pneumatic spring, the spring's stiffness can be simplified as a square nonlinear function.
荷载在传力杆中的传递由竖向弹簧模拟，其弹簧刚度取决于传力杆的特性以及杆与板间的相互作用。
The load transfer on dowels is modeled as vertical springs, whose stiffness depends on the dowel properties and the dowel-plate interaction.
增加预紧力和降低螺栓刚度是提高耐久性的有效措施。
Adding pre tightening force and reducing the stiffness are the effective measures to raise the endurance.
轧机伺服压下系统具有轧制力大的特点，其位移反馈机构的动刚度对系统的影响应予以考虑。
The servo screwdown system of a rolling mill has the characteristics of big rolling force, the influence of displacement feedback apparatus dynamic stiffness on system should be considered.
以实测信号为依据，通过幅值域分析，探讨了拖拉机液压系统力调节弹簧刚度的概率设计方法。
According to amplitude analysis of the measurement signal, the probability DE sign method of finding the spring stiffness of the tractor's hydraulic draft control system is stud ied.
针对不同介质粒子合理选择上述参量，以得到较大光阱力和光阱刚度。
In experiment, it is reason to choose above parameters for different medium particles, so as to get bigger optical trapping force and optical trapping rigidity.
通过变加速方法降低惯性力，提高了机床的静刚度，改善了机床的动力学性能。
Then the inertia force is reduced by the inconstant acceleration, so that the static rigidity of the machine is raised and the kinetic performance of the machine is improved.
结果表明，锥度改变了端面膜压分布，并显著影响开启力、气膜刚度以及泄漏率等参数；
The results indicate that the film pressure distribution is changed, and the performance parameters such as opening force, gas film stiffness, leakage are dramatically influenced by the face coning.
结构受冲击作用下的强度、刚度、稳定性、临界能量荷载和临界冲击力的研究属结构耐撞性研究范畴，由于结构在冲击作用下的响应是一个复杂的非线性力学问题，目前该研究领域还比较弱。
The research of intensity, rigidity, the stability, critical energy and critical impact force belongs to the fields of structure impact resistance, which the structure is struck in the impact load.
转子振动主动控制的本质就是通过主动控制力给系统引入附加的刚度及阻尼，以达到减少系统的不平衡响应，使系统稳定的目的。
The aim of the active vibration control of rotor system is to obtain enough accessional stiffness and damper to cut down the response of unbalance and to keep the stabilization of rotor system.
结构内部的预紧力的大小和分布与结构的整体刚度、结合部位的局部刚度、过盈配合间隙、接触面积等因素有关。
The distribution of pre-stress in the multi-layer structure is related to the global and local rigidity, the contact area and the clearance of superimposition.
随着弹簧刚度和激力的增大，系统幅频响应曲线上下两条曲线的距离逐渐增大。
With increasing in stiffness and excitation force, the distance between amplitude-frequency curves of the system enlarges.
楼板的刚性不仅同楼板本身的刚度有关，而且同抗侧力构件的刚度及分布有关。
Floor rigidity has relations not only to floor stiffness, but also to stiffness and location of anti-shear member.
为建立机车各部件的垂向动力学微分方程，计算各悬挂力的输出响应，建立了系统质量、阻尼和刚度的增广矩阵。
Augmented mass, damping, stiffness matrix of system was set up to derive vertical dynamic differential equations for locomotive components and obtain output responses of suspensions.
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