结果表明，夹板只对第一阶固有频率有较大提高。
The test result shows that clamper greatly increases only the first natural frequency.
提出以第一阶振型改变率作为结构损伤识别的标识量。
Hereby, the change ratio of the first order mode shape is presented as the indicator for structure damage detection.
矩阵迭代法是求矩阵的第一阶特征值与特征向量的一种数值方法。
Matrix iteration method can be employed to figure out the first eigenvalue and eigenvector of a matrix.
试验结果表明：随着激励振级加大，板状燃料组件的第一阶共振频率减小；
As excitation magnitude increases, the 1st resonant frequency of the parallel plate fuel assembly decreases.
而另外一阶模态可能具有与第一阶模态不同方向的响应，而在其他方向上几乎没有响应。
Yet another mode of the structure may have response in a different direction than the first mode with little or no response in the other directions.
为避免桥梁共振，设计时应满足第一阶竖向自振频率大于车辆最大速度与车辆长度的比值。
To avoid the most dangerous resonance, the first vertical frequency of the bridge should be greater than the ratio of the maximum vehicle speed to the vehicle length in design.
求得了具体结构参数情况下的第一阶屈曲临界流速，计算了结构参数变化对临界流速的影响。
The first_order critical fluid speed with concrete structural parameters is calculated, and the influence on critical fluid speed is studied when the structural parameters are changed.
并且只需要结构的第一阶柔度值，大大减少了实际测试的工作量，简单有效，在工程上有很大的适用性。
And only the first flexibility value is need, so the actual measuring workload id greatly decreased, it shows this method is simple and feasible in project.
以工程常见四端位移为零的振动板为例，提出一种新的压电式传感器的设计方法测量第一阶声辐射模态伴随系数。
With the examples of the pinned-pinned plate, a new piezoelectric sensor design is presented to measure the first adjoint coefficient of radiation mode.
目前在网壳结构设计中，初始缺陷是按照第一阶屈曲模态的L/300（L为结构跨度），对结构施加初始变形。
At present, in the design of reticulated shells, the initial deformation of the first buckling mode(the dimension is L/300) of the structure is introduced as initial imperfection.
分析结果表明，优化后的主溜板在满足最大变形约束要求下，第一阶自然频率提高31.2%，材料节省7.8%。
Simulation with the optimized tool slide shows that the first order natural frequency is increased by 31.2% and material savings of 7.8%.
通过比较各个形式箱梁的第一阶屈曲特征值，前四阶屈曲模态和极值屈曲荷载得出了不同形式的加劲箱梁稳定性能的定性规律。
From the calculation and the analysis the qualitative rules of the stiffener's influence to the stability of the box girder are obtained.
通过实验分析，证实了对场分布影响较大的第一阶谐振频率是TE101模，TE101模的谐振频率是TEM传输室的上限使用频率。
Through the experiment, it was validated that the first frequency that have great effect on the field distribution is TE101, and the resonant frequency of TE101 is the limited frequency of TEM cell.
第一阶模态振型相对均值系统的变化很小。一般地，结构参数的随机变异对模态振型均值的影响大于对模态频率、模态阻尼比均值的影响。
In general, the variation of structure parameters has more effect on the mean values of mode than those of modal frequencies and modal damping ratios.
假如无法在10工作日截止时间前提出书面决定，第一阶相关主管必须以书面通知该员工，书面决定延迟的理由和员工将会收到书面决定的日期。
If there is any need to extend the 10 workday deadline, the designee must notify the employee in writing of the reason for the delay and the date the employee will receive the written decision.
我国现在仍是采用高耸或高层结构的荷载规范，只取结构的第一阶频率计算风振系数，按此方法进行大跨空间网格结构的风振分析是很不合理的。
In China, the high rise structures load code is used for the large span spatial structures, only the first frequency is taken account for the wind vibration analysis, which is not reasonable.
系统的控制目标是根据系统的状态动态地在第一阶中等待的顾客中选定接受服务的顾客的种类和确定第一个服务器的服务速度以保证系统在一个无限长的时间里平均费用最低。
The objective is to dynamically route customers of both types to stage 1 and choose the service rate, based on the state of the system, so as to minimize the average cost over an infinite horizon.
第一章有限差分方法主要内容是一阶和二阶的两点式、三点式和五点式差分方案。
The main contents of first chapter are several difference schemes of first-order and second-order differential equations.
第一扬声器与一阶分频网络耦合的极性是第二扬声器与分频网络耦合的极性的反相。
The polarity in which the first loudspeaker is coupled to the first-order crossover network is an inverse of the polarity in which the second loudspeaker is coupled to the crossover network.
第一节介绍了三次矩阵样条函数方法和四次矩阵样条函数方法逼近一阶矩阵线性微分方程的数值解。
Section I describes the numerical solution of first order matrix linear differential equation using the cubic matrix spline function and quartic matrix spline function.
第一节介绍了三次矩阵样条函数方法和四次矩阵样条函数方法逼近一阶矩阵线性微分方程的数值解。
Section I describes the numerical solution of first order matrix linear differential equation using the cubic matrix spline function and quartic matrix spline function.
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