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Numerical calculations show that when azimuthally asymmetric space harmonics increases, the start oscillation length decreases, and that it is possible to increase the start oscillation length by tailoring magnetic field's amplitude and its period.

四、在抑制返波振荡的方法中，改变聚焦磁场是一种比较好的方法，因为改变聚焦磁场几乎不会改变前向波的互作用条件，而会改变返波的互作用条件，因而既可以对返波振荡进行很好的抑制，又有利于提高效率。

It shows that it is possible to increase the start oscillation length by tailoring magnetic field's amplitude and its period without changing the synchronous condition of the fundamental wave; in the meantime, when there are two or more azimuthally asymmetric space harmonics in the high power broad-band helix TWTtraveling wave tu...

与此同时，对起振长度、初始非同步速度参量随皮尔斯增益参量、空间电荷参量、损耗参量等的变化，以及在超宽带行波管中当存在两个或多个角向非对称空间谐波时，起振长度、初始非同步速度参量随周期永久聚焦磁场的变化进行了研究。优化设计聚焦磁场、电子注和螺旋线慢波系统的参量可以对螺旋线行波管的稳定性分析提供必要的依据。

It shows that it is possible to increase the start oscillation length by tailoring magnetic field's amplitude and its period without changing the synchronous condition of the fundamental wave;in the meantime, when there are two or more azimuthally asymmetric space harmonics in the high power broad-band helix TWT, the influences of the Pierce's gain parameter, space charge parameter, and loss parameter on the start oscillation length and real starting asynchronous velocity parameter are also analyzed.

研究结果表明：改变聚焦磁场的幅值或周期来增加起振长度是可能的，而且不会改变基波的互作用条件。与此同时，对起振长度、初始非同步速度参量随皮尔斯增益参量、空间电荷参量、损耗参量等的变化，以及在超宽带行波管中当存在两个或多个角向非对称空间谐波时，起振长度、初始非同步速度参量随周期永久聚焦磁场的变化进行了研究。

Cross-dipole Acoustic Logging is the best measurement of the formation wave-slowness,amplitude and attenuation coefficient of the compressional,shear and Stoneley wave types that may occur in array acoustic waveform data.Further more,it has special superiority in the evaluation of shear-wave azimuthally anisotropy.

0引言在柴达木盆地交叉偶极子声波测井主要有以下方面的用途：纵横波、斯通利波的提取，地层各向异性分析和斯通利波渗透性分析，并且可以根据地层岩石动态力学参数的计算方法进行储层动态力学参数的计算和估计，指导工程施工。

The amplitude of hamstrings and gastrocnemius were more related with pelvic support. During dynamic support modes, even the load was low the muscle activation was still higher than that in SE mode. It appeared biarticular muscles recruit more during dynamic pelvic support mode, and also showed the ability to adjust under the task demands.

而大腿后肌群、腓肠肌的活化量则与骨盆支撑模式较为相关，在活动座椅脚踏车活动的肌肉活化量较大，显示在活动式骨盆支撑的脚踏车运动中，双关节肌肉有较多的肌肉徵召；亦显现出双关节肌肉因应任务不同时的微调功能。

The working method of rotary inductosyn functioning as anglemeasuring component was put forward emphatically,that is singlephase excitation biphase output amplitude discrimination signal processing technique. The theory and the component of this method was also put forward,at the same time, confirmation of Angle measuring system technical parameter,error analysis of Angle measuring system, realization Angle measuring system directive, circuit of measuring control software, programme idea.

重点给出了圆感应同步器作为测角元件的单相激磁双相输出的鉴幅型信号处理的实现方案，以及该方案的原理和组成，测角系统各技术参数的确定和测角系统的误差分析，测角系统各指令的实现，测控软件的流程和编程思路。

While dull wave of monophasic or biphasic and low amplitude could be seen under low voltage single stimulation.

而在低电压单个刺激时见到的是单相或双相低幅的钝波。

Bolographic identifies the use of computer technology to change the amplitude and frequency of the grating to effect than the calculated logo color more 光艳, more profound.

全息标识采用计算机技术改变光栅的幅度及频率，使其效果比所计算的图案的彩色更加光艳，更加清晰。

Bolographic identifies the use of computer technology to change the amplitude and frequency of the grating to effect than the calculated logo color more 光艳, more profound.

全息标记拔取筹算机技艺保持光栅的幅度及频率，使其成果比所筹算的图案的不黑白愈加光艳，愈加澄辉。

With electrophysiological methods, effects of different concentrations of alcohol on the amplitude, conduction velocity and duration of action potential of isolated sciatic nerve in Bufo Bufo were observed.

应用电生理方法观察了不同浓度的酒精对蟾蜍离体坐骨神经干动作电位的幅度、持续时间及传导速度的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。