查询词典 vibration

The Shi zi mountain rock tunnel which connecting the Punan expressway and the Nanping city in Fujian province were taken as engineering background. Associating plentiful of field test data of vibration velocity with the finite element numerical simulation which based on MIDAS/GTS software, the blasting vibration behavior of the precedence tunnel in the Shi zi mountain rock tunnel was studied. For further, the effects that lining support systems with variation parameters, such as the length, the distance and the length of rockbolts, the spacing of steel braces, the thickness and reinforcement quantity of the secondary lining,,on the blasting vibration behavior of the precedence tunnel were systemlly discussed.

论文以福建浦南高速与南平城区连接线狮子山隧道为工程依托，通过大量的现场振速测试和基于MIDAS/GTS软件进行的三维动力有限元数值模拟，对狮子山隧道先行隧道的爆破振动特性进行了系统研究，并在此基础上进一步探讨了不同衬砌结构参数，如锚杆长度、钢格栅间距、二衬厚度和二衬配筋量等对先行隧道爆破振动特性的影响。

The following paper introduces the basic principle of vibration control of skyscraping structure ,illustrates three main vibration control methods as passive control,active control and semi-active control,and discusses the instrument and device of vibration control of skyscraping structure ,in order to ensure the security of buildings with skyscraping structure .

介绍了高耸结构振动控制的基本原理，并阐述了被动控制、主动控制和半主动控制等三种高耸结构振动控制的主要方法，最后论述了高耸结构振动控制的手段和装置，以保证高耸结构建筑物的安全。

The drill string lateral vibration, axial vibration and tensional vibration are analyzed respectively.

分别分析了钻柱的横向振动、轴向振动、扭转振动。

Compared with the existing vision-based method for vibration measurement, this method obtains the analytical results of the amplitude of high-frequency vibration by calculating the first and second order geometric moments of a motion blurred image and an unblurred reference image. This reduces the computational complexity for vibration measurement from images.

与现有的基于计算机视觉的振动测量方法相比，该方法仅通过计算1幅清晰参考图像及1幅运动模糊图像的前2阶几何矩即可得到2D高频直线振动振幅的解析解，降低了根据图像信息测量振幅的计算复杂程度。

Practice shows that this semiconductor laser self-mixing vibrometer can get good vibration waveform and vibration parameters from the vibration source.

可以测量出振动物体的振动频率、振幅以及还原振动波形，振动幅度测量精度可以达到0.325m，频率精度为1Hz。

The mathematical model to describe the vibration state of wire under the action of ultrasonic vibration and discharge force has been established, through which computer simulation has been made to study the influence of ultrasonic excitation on the vibration state of wire and distribution of discharge spots.

本文首先建立了描述超声线切割复合加工中电极丝振动状态的数学模型，并计算机模拟分析了超声振动对复合加工中电极丝振动状态及放电点分布状态的影响。

The initiative and passive methods to decrease the vibration have been studied. The results of decreasing of vibration with the installing of hydraulic liners between the chocks and stand have been researched using the simulation software. The hydraulic liners can decrease or eliminate the vibration effectively.

研究了轧机垂直系统主动减振和被动减振的措施和策略，并运用仿真分析手段，研究了轴承座与机架间采用液压衬板的减振效果，发现采用液压衬板可以很好地抑制轧机垂直系统自激振动的发生。

In chapter 2, based on analysis for the existed methods of torsional vibration measurement, a novel measuring method, parallelling dual-beam laser doppler torsional vibration measurement is first put forward by the author, it not only divides translation and rotation of the rotor, but also can be used to measure torsional vibration of non-cylinder rotor.

本文的第二章在分析现有扭转振动测量方法的基础上，首次提出平行双光束激光多普勒扭转振动测量方法，它不仅解决了转子平动与转动的完全分离，还能测量各种非圆形截面转子的扭转振动；为辨别转子的转动方向，还提出双频激光多普勒测振仪，满足故障诊断对测量启、停转子和转速方向变化转子性能的要求。

At present, the Company electromagnetic vibration feeder, air hammer, level gauge, solenoid valve and control device, screw feeder, belt conveyor, bucket elevator, dust collector, zero speed switches, proximity switches, high-frequency coil , electromagnetic vibrators, vibration hopper, vibration controllers, marking electromagnet, power conditioners, heating units, heating the first, high-frequency cable, high-frequency transformers, ignition transformers and other products have been sold all over the country, has been unanimously praised users .

目前，本公司电磁振动给料机、气锤、料位计、电磁阀及控制仪、螺旋给料机、皮带输送机、斗式提升机、除尘器、零速开关、接近开关、高频线圈、电磁振动器、振动料斗、振动控制器、打标记电磁铁、电源调节器、加热单元、加热头、高频电缆、高频变压器、点火变压器等产品已销往全国各地，得到了用户一致好评。

In the fourth paragraph, how the theory of the damping to forging hammer foundation advances at home and abroad, the research and application of the implement for damping to forging hammer, the structure of damping to forging hammer and the calculation methods for forging hammer foundation vibration system, which are used at home nowadays, are particularly introduced.In the fifth paragraph, aiming at direct damping under anvil block of forging hammer, the author bases a mechanics model of two-degree with damping, and optimizes the vibration parameters both in frequency field and in time field, then finds out the new simple method of optimizing the vibration parameters of the damping device under anvil block of forging hammer.

第五章针对锻锤砧下直接支承式减振基础，建立了锻锤减振系统的二自由度有阻尼振动力学模型，然后用傅立叶变换法求出振动传递率的频率关系，用直接积分法求出砧座和基础位移的时域响应，并分别对频域函数和时域函数进行参数优化，最终建立起频率函数—时域函数—优化参数间的相互关系，从而找到了锻锤砧下隔振器参数优化的简便新方法。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。