查询词典 combination frequency

In this article,the writer in combination with the character of variable velocity variable frequency analyzed the principles of transmission system and the request of adjusting velocity in filament yarn twisting machine .

文章分析了弹力丝机传动系统和调速要求，结合变频调速技术的特点，选用艾默生变频器实现调速，简化了传动结构。

The method with dual-frequency combination wave theory is better than others, and has broad applied prospects.

利用双频组合波理论得出的结果优于其它形式，是一种具有广阔应用前景的方法。

A dyn amical visual analysis is done about a shrouded impeller which is used in a large-scale compressor unit on the basis of visual theory and finite element analysis theory with the combination of SolidWorks and ANSYS . With the vibration characteristics of the impeller under the inertial force, we get to know whether the impeller with given conditions can avoid from the resonant frequency or not and its influence of vibration on system.

以可视化理论、有限元分析理论为基础，结合三维建模软件SolidWorks和有限元分析软件 ANSYS 对某压缩机组用闭式叶轮进行动力学可视化分析，得到其在惯性力作用下的振动特性，可以判断其在给定工况下能否避开共振频率以及评估其振动对系统的影响。

Mineral magnetic parameters, including magnetic susceptibility, frequency dependent susceptibility, isothermal remanent magnetization, anhysteretic remanent magnetization, temperature-dependence of susceptibility, were measured on quartzite and surface soil derived from quartzite. The results in combination with the microscope observation indicated little magnetic mineral in quartzite but a few magnetite, maghemite, iron oxyhydroxides in surface soil. The magnetic grains were mainly superparamagnetic and stable single domain. Maghemite is secondary mineral formed in the process of pedogenesis.

通过对石英岩及发育于石英岩之上表土的磁化率、频率磁化率χ(下标 fd、等温剩磁、非磁滞剩磁ARM0、k-T曲线等磁学参数测定和石英岩显微镜下观察，结果表明，石英岩中磁性矿物含量极少；表土中含磁铁矿、磁赤铁矿、铁的氢氧化物等磁性矿物，磁性矿物主要以稳定单畴(SSD和超顺磁性颗粒形式存在，磁赤铁矿是石英岩在成土过程中形成的次生矿物。

To estimate from the noise, it seems as if it is a vibration at half the rotational frequency, so maybe it's a problem of the hydrodynamical/ball bearing combination that Andreas had to use to arrange the cantilevered suspension with the necessary small diameter directly in front of the compressor wheel hub.

为了估计的噪音，好像它是一半的振动频率旋转，所以也许这是一个对流体动力学/球轴承组合的问题，安德烈不得不使用安排在前面必要的小直径暂停直接悬臂压缩机的轮毂。

Through simulation of the real process of thomcolumbar burst fracture and use of modem dynamics techniques, the present study was (1) to investigate the kinetic relationship between structural damage and impact energy absorption and dynamics mechanism of thoracolumbar burst fracture by quantitative analysis of various injured segments;(2) to explore the instability mechanism of L1 vertebral burst fracture and its injury threshold by three-dimensional analysis of the injured segment with stereophotogrammetry in combination of transient physical parameters, anatomy and image;(3) to explore the corresponding relationships between impact energy, geometry parameters and biomechanics by geometry and biomechanical analysis of thoracolumbar burst fracture, which may provide an objective standard for evaluation of spinal injury severity and experimental evidence for adoption of biomechanical treatment in clinic;(4) to evaluate the fixation effect of different instruments and the effect of intervertebral bone graft on segment fixation by analysis of the threedimensional stability of different internal fixation instruments and their decompression of the spinal canal, which may provide experimental evidence for therapeutical selection for thoracolumbar burst fracture in future; and finally to investigate the effect of various instrument fixation on dynamical characteristics by comparison and quantitative analysis of frequency and amplitude responses, which may provide certain theories and experimental evidence for application of vibration test to judge the stability of the spine.

本研究从胸腰段脊柱爆裂骨折发生的实际过程出发，以现代动力学检测及计算机多通道高性能数据采集分析系统等高新技术为基础，实时量化分析损伤节段的工程参数，揭示了结构破坏与能量吸收的变化规律，探讨了胸腰段脊柱爆裂骨折的瞬态损伤机制；利用三维立体摄像技术，对不同损伤程度的节段进行三维运动分析，结合瞬态物理参数、影像学和病理解剖，明确了〓椎体爆裂骨折的失稳机制及损伤阈值；通过对胸腰椎爆裂骨折的几何学变化及生物力学分析，明确了撞击能量与几何参数、几何参数与生物力学的相应关系，为评判脊柱损伤程度提供了客观标准，为治疗中采取适宜的生物力学方法提供了实验依据；通过对比分析不同内固定器械的三维稳定性和对椎管的减压作用，评价不同器械的复位固定作用，同时比较椎体间植骨对节段固定作用的影响，为今后临床胸腰段脊柱爆裂骨折的治疗选择提供依据；利用振动测试与分析技术，比较及量化分析了不同致伤状况的频幅响应特征，比较分析了各种器械固定对动力学特性的影响，为今后临床建立基于振动测试与分析技术判断脊柱稳定性的诊断方法，提供了一定的理论和实验依据。

The average sequence divergence between individuals was 0.0006, while the range within a population and between populations were both 0-0.0013. Fst values were 0.0704, 0.0491, and 0.0792 for Cox1, ND1, and the combination of both genes. These data showed significant genetic variances (P.05) among geographic populations. The taimen populations in Heilongjiang River could be divided into four subpopulations based on Fst values between these geographic populations. However, these populations shared one common haplotype (BH11) shown by haplotype network and haplotype distribution frequency analysis. This suggested that they evolved from a common ancestor (likely a population in the upstream of the Heilongjiang river) and shared common gene flows.

单倍型网络和AMOVA分析结果均表明黑龙江流域哲罗鲑存在显著的群体分化，Cox1基因、ND1基因及组合数据的群体间Fst分别为0.0704、0.0491、0.0792，均达到显著性水平（P.05），根据配对群体间Fst可以将黑龙江流域哲罗鲑群体分为黑龙江上游群体、呼玛河群体、乌苏里江群体、内蒙古伊敏河上游群体4个地理群。9个群体共享同一个单倍型（BH11），表明这些群体具有相同的演化历史，为同一个祖先群体演化而来。

Through the water fog blow the zymogenic circulately, the method of multi-point temperature measuring can improve the accuracy of temperature and guarantee the product quality; the combination of motor frequency and adjusting the open degree of air-door can realize the amount of wind; output dynamic display modules can realize the dynamic output and stable display.

介绍了利用可编程控制器对副食生产线酱油生产进行控制的方法，即通过水雾对曲料做循环吹风，采用多点温度检测的方法，提高了测温精度，保证了产品的质量；通过电机变频和调整风门开度相结合的方法，实现进风量的调整；采用动态输出显示模块，实现对各个参数的动态输出和静态显示。

The resolution is improved through optimal combination of bin attributes which are small offset, small bin, wide azimuth, large off-inline distance and high coverage. Then the "feature net" of near surface conditions was created, and the "sudden transition" of near surface variations was found to provide reliable foundation for optimum shooting parameters selection. The effective methods of spectrum analysis were generalized. It is concluded that the target is satisfying sand body interpretation, not pursuing high frequency.

通过较小炮检距、较小面元、较宽方位角、较大非纵距和较高的纵、横向覆盖次数等面元属性的优化组合，提高了该区地震资料的分辨率；建立了表层条件&特征网&，通过寻找表层变化&突变带&，可为最佳激发因素的选取提供可靠依据；总结了频谱分析的有效方法，提出要以砂体解释的需要为目标，避免陷入盲目追求高频率的误区。

When using the device in the daisy chain configuration, maximum clock frequency is determined by a combination of propagation delay time (tDO 80 ns), data input setup time (tSU 40 ns), SCK high time (tHI 40 ns), and SCK rise and fall times of 5 ns.

当使用菊花链配置中的设备，最大时钟频率是由一个传播延迟时间（TDO的80纳秒），数据输入建立时间（台联40纳秒）的组合，SCK的时候（硫40纳秒），和SCK上升和下降5 ns的时间。

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。