多自由度的

It is found that there are good relationships between the fundamental frequencies and the structural properties of straight-chain alkanes, and between the sum-frequencies and the additivity properties of straight-chain alkanes as well.

将直链烷烃分子看成是一个多自由度振动系统，用机械振动理论中的传递矩阵法计算了 C2~C32直链烷烃的固有频率，分析了固有频率随化合物结构单元的变化规律。

Crosswise coupling disturbance of a loading system with multiple degree of freedom is analyzed.

针对多自由度加载系统中存在的横向耦合干扰问题进行了理论分析，推导出横向耦合干扰的数学计算公式，并提出了横向耦合干扰的补偿方案

Essential condition of the diagram to design the scheme was decided, and the methods to distinguish component attributes and to calculate planetary characteristic parameters were presented.

确定了设计多自由度复合行星传动方案应满足的必要条件，以及组成复合排的各构件属性判别方法和行星排的特性参数计算方法。

Then the ductility demand spectrum, which comprises a group of ductility coefficients or yield strength coefficient versus natural period curves for different yield strength coefficient or ductility coefficients are obtained.

在分析总结几种常见的非线性静力分析侧向力分布形式的基础上，提出两个基于多自由度体系振型的侧向力分布计算方法：30％方法和部分SRSS方法。

Using the generalized degree of A-proper mappings, the existence of periodic solutions for nonlinear vibration is established.

应用A-proper映象的广义拓扑度理论，对多自由度非线性振动系统周期解的存在性给出了严密的数学基础。

Probability perturbation finite element method for response analysis of multi-degree-of-freedom nonlinear vibration systems with random parameters

非线性因素会对系统解耦产生影响，因此工程实际中的非线性隔振系统一般为多自由度系统，同时，船舶机械隔振系统的基座应视为具有一定机械阻抗的弹性体。

The multi-degree-freedom equivalent model of INS bracket is also given and analyzed to improve the analysis precision. The dynamic response spectrum of this model is achieved by modal analysis and spectrum theory. The numeric formulas of time-domain response are deduced by residue theorem.

对于惯导减振支架的多自由度系统等效分析模型，则运用模态叠加法和谱分析理论得到响应的功率谱，根据留数定理推导了系统时域加速度动力响应的数值计算公式。

With the development of microfabrication technology, micromirrors array is developed with high frequency, large deflection angle, low driving power and large-scale array.

随着微加工技术的发展，微反射镜阵列正在朝着高频率、大偏转角度、多自由度、低耗能和大规模阵列的方向发展。

A clearance-typed nonlinear torsional vibration model with multiple degree of freedom of star gear transmission being excited by errors of transmission and time varying meshing stiffness was established.

建立了受传递误差和时变啮合刚度激励的星型齿轮传动的间隙型多自由度非线性扭转振动模型，并用自适应变步长Gill数值积分方法进行了求解。

In order to measure structural vibrations,a time-averaged imaging method based on harmonic excitations is presented in this paper.

介绍了利用时间平均成像的简谐激励方法测量多自由度结构振动的原理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。