振幅

The simulation is carried out with the excitation frequency relative to the natural vortex-shedding frequency from the corresponding stationary cylinder taking values in the range which stands for sub- and superharmonic excitation and the oscillation dimensionless amplitudes. Change of these parameters and Reynolds number will lead to the mode synchronization and mode competition and the switching between different vortex shedding modes.

对振动频率和静止圆柱旋涡脱落频率比在一定的超谐和亚谐范围、一定的无量纲振幅范围和不同的雷诺数都作了模拟，发现随这些参数变化将产生旋涡脱落模式的同步、竞争和相互转化现象。

The periodic variation in amplitude of a wave produced by the superposition of two waves of different frequencies.

通信技术中的一种调幅信号，其载波的振幅在调制波形周期的某些部分减少到零。

Owing to the rather large lateral amplitude as high as 8.465mm, the bridge swing is significant; the limit speed value for this bridge is provided.

由于该桥跨中横向水平振幅达到8.465mm，晃动较大，文中最后还对该桥提出了限速建议值。

Simulation results of winding current wave under different frequencies show that much harmonic is generated in the winding currents because of the gap variation, and an enough amplitude of vibration can be obtained near the syntony point.

对不同频率下绕组电流波形的仿真结果表明，在发生谐振的时候，系统气隙的周期变化会在电流中产生很多谐波，并在谐振点附近可以获得足够的振幅。

The main content of this dissertation includes: 1. Research on the theory of ultrasonic power supply, introduce its development process. On the basis of these, fix on the scheme of medical ultrasonic low-power supply. 2. According to the principle of modularized design, divide medical ultrasonic low-power supply into four parts. They are power amplify circuit, power control circuit, frequency automatic tracking circuit and matching circuit. Separately research on their theories and design their circuits and necessary programs, especially, effectively resolve the problem tracking the supersonic vibration system with a narrow syntony frequency bandwidth and a high swing. 3. The matching experiments gain good result, and prove that medical ultrasonic low-power supply is entirely up to the mustard on intellectualization, wide band of working frequency, steady output and high efficiency.

本文工作的主要内容包括： 1、研究了超声功率电源的原理，并回顾了它的发展过程，在此基础之上确定本文医用小功率超声电源的设计方案； 2、按照模块化的设计原则，将医用小功率超声电源的设计分解为功率放大电路、功率控制电路、频率自动跟踪电路和匹配电路等四个部分，分别研究了各部分的原理，在此基础之上进行了具体的电路设计和程序设计，尤其是有效地解决了对谐振频率带宽窄振幅高的超声振动系统的频率跟踪问题； 3、通过与超声振动系统的各项配合实验，取得了很好的实验结果，验证了医用小功率超声电源完全满足智能化、工作频带宽、输出功率稳定、输出效率高的设计要求。

He maximum amplitude of TEG measuresthe maximum clot strength, which is dependent on both fibrinogen leveland platelet function.

EG参数最大振幅反映正在形成的血凝块的最大强度或硬度及血凝块形成的稳定性，主要受纤维蛋白原和血小板两要素的影响。

Of the TEG variables, maximum amplitude seems to be the best parameter to identify hypercoagulable states and to predict thromboembolic events.

在TEG的各变量中，最大振幅可以作为鉴别血液高凝状态和预测血栓栓塞发生的最好参数。

The key features and some properties of the telluric field of are discussed as follows.

地震前后大地电场E的方位发生转动；3、大地电场E具有日变倍9周期性和振幅｜E｜变化特征；4大地电场EW分量的极性变化。

The daily variation of the telluric field E had per 9 periodicity, and the amplitUde |E| showed abnormal changes.

大地电场E具有日变倍9周期性和振幅|E|变化特征；4。

In general, the occurrence and amplitudes of delta and theta rhythms are highly variable within and between individuals.

一般说来，delta和theta波在发生及振幅上有很大个体差异。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新