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Start-oscillation current will be down by absolute instability of TE02 and TE01 modes and electron velocity ratio and interaction section, it can be suppressed by the distributed wall losses.

模拟结果显示，TE02、TE01模式绝对不稳定的引发使得原有操作电流降低，其起振电流明显受电子速率比、作用段长度的影响，但此模式可藉由损耗来抑制，此结论与线性理论结果一致。

This paper, with the analysis of the propagation characteristics in a lossy cylindrical waveguide and using small-signal theoretical dispersion relation, presents study on the device stability with influence of the absolute instability and the backward wave oscillation in TE01-mode lossy dielectric-load gyrotron traveling wave amplifier.

摘要该文从分析损耗介质加载金属圆波导中电磁波传输特性出发，应用回旋行波管放大器小信号色散方程，研究损耗介质加载结构TE01模回旋行波管放大器绝对不稳定性振荡和回旋返波振荡对器件稳定性的影响。

The causes for its formation can be attributed to the periodic oscillation of growth rate in the vicinity of absolute stability velocity.

Mn二元合金，镍基合金(Ni-12.9W-7.2Cr-5.2Co-3.6Al-1.4Ti)和1Cr18Ni9Ti不锈钢三种材料在激光快速凝固下的组织形成与转化规律，得到了如下主要结论： 1。

In our self-Oscillation drive system,the stable error of the oscillation amplitude is eliminated by the PI controller .

在该闭环驱动系统中，通过引入 PI控制器消除了振动幅度控制的稳态误差。

As a primary result, threshold current of 200~700 mA and DFB mode oscillation within a range of at least 80℃ is achieved, and stable single longitudinal mode oscillation is maintained up to at least 20 mW output.

作为初步结果，氧化膜条形器件阈值电流为200~700mA，单模输出功率至少为20mW，单模工作持续到至少80℃。

The popular are single-leaf spring oscillation mechanism and resonance mould. In this paper, the introduction to the development of Concast mould oscillation is available at first.

围绕这种思想产生了一些新式振动机构，比较流行的有半板簧振动装置和谐振式振动装置。

In the case that the oscillation factor isn't sign reversal and neutral factor is p, by discussing the sign of the neutral term's first derivative and using Holder inequality the oscillation conditions of the all solutions of this kind of equation are studied, three sufficient theories that all solutions of the equation oscillate are obtained.

在振动因子q保号、中立型因子p的情况下，通过对中立型项一阶导数符号的讨论，根据Holder不等式，研究了该类方程的解振动的条件，得到了所研究方程所有解振动的三个充分性定理，所得结论是对该类问题已有结论的进一步完善和推广。

The device for self-increasing flow was just utilize the under pressure in the self-exciting oscillation cavity to introduce the annular fluid leading to the external excited oscillation.

自增流量装置就是利用自激振荡腔室内的负压力，引入环空的流体形成它激振荡，达到自增流量的目的。

Then by using the generalized Gronwall inequalities, the oscillation for second-order self-adjoint differential equations is discussed and new oscillation criteria are obtained.

第一章为综述，简要回顾常微分方程、泛函微分方程及时标上的动态方程等的振动理论的发展与现状，同时介绍了本文的主要工作。

This paper fully discusses the basic principle and experimental methods of determining aircraft longitudinal dynamic stability derivative during using half-model and various oscillations-free oscillation and fored oscillation.

本文较全面地讨论了当采用不同的振动法，即自由振动法和强迫振动法时，用半模型测定飞行器纵向动导数的基本原理和实验方法。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。