不稳定的电流

However, operating of the high current, the output power, gain, and efficiency of gyro-TWT will be degraded where the absolute instability, gyrotron backward oscillation and reflective oscillation occur to cause mode competition. Stability issues comprise the key factors limiting the performance of the gyro-TWT.

对於高电流的影响，磁旋行波放大器将有可能引发绝对不稳定、磁旋返波振荡(gyrotron backward oscillation；gyro-BWO)及反射振荡，造成模式竞争而抑制原先操作模式的放大波，进而影响其输出功率、增益及效率。

This technique is an improved and generalized version of the finite array Green's function method[1], and fit for analyzing all kinds of arrays including finite periodic and aperiodic arrays.

该法不受阵列单元排布形式、单元电流分布情况和单元数量的限制，对有限周期和非周期阵列的分析都有着较高的计算效率和稳定的收敛性。

Inductive circuit switching usually create voltage spikes due to current chopping or numerical instability.

电抗电路会由于电流的涌动或者数值不稳定，所以电路在接通和关断通常都会产生尖峰电压。

The readout system can efficiently reduce the influences from leakage current, input offset, process parameter instability, and other causes. The value of input weak current signal can be obtained simply through demarcation.

读出电路系统可以有效地减小漏电流、输入失调、外来干扰和工艺参数不稳定等带来的影响，通过简单的标定和换算即可得到微弱电流信号的大小。

Dynamic analysis shows that the system can get stable commutating voltage to attain the load-commutation if there is no nonperiodic transient current component in the rotor.

动态特性分析表明，只要不出现转子暂态电流，系统可获得稳定的换流电压而实现负载换流。

But as far application, one of the main problems is that its output power is not stable and the laser is easy to be destroyed because of transient circuit and voltage peak. In recent years, many researchers have been studying it.

但在实际使用中存在的主要问题之一是激光器的输出功率不稳定，而且瞬态电流或电压尖峰等许多因素都很容易损坏激光器，近些年来，有不少科研单位从事这一方面的研究。

In order to remove the unsteady run for moter caused by its vibra ation,applying the ER damping technique,the author solved the problem that the amplitudes of the motor viberaton would diverge because of the negative damp during its travel,so as to improve the steadiness for the motor to run.

为了解决摩托车振动导致的行驶不稳定，应用电流变减振技术，解决在行进过程中出现的等效阻尼为负值，致使振动振幅发散的问题，改善了摩托车在行驶时的平稳性

Motherboard is not sufficient and stable voltage and current, so the system re-start phenomenon occurred.

主板得不到足够而稳定的电压和电流，于是系统发生了重启动现象。

On the foundation of the analysis,a fault diagnosis method which is an advanced pattern recognition method is proposed and a fault diagnosis system of generator excitation power unit based on virtual instrument is developed.It is proved by experiment that the fault diagnosis system can precisely judge which thirstier goes wrong and get accurate diagnosis result.

发生晶闸管直通故障时，瞬间将造成相电压短路，短路电流使保护电路动作；而发生晶闸管开路故障时(如晶闸管器件门极损坏或触发脉冲丢失等故障)，功率单元仍然工作，但输出励磁电压的脉动增大，平均值降低，这种带病工作导致励磁电压波形产生畸变，从而导致了发电机工作在不稳定状态，同时也加大了对电网的干扰[2]。

Then, stability boundary is obtained through the critical condition of inductor current conduction mode of the forward converter. The nature of this instability phenomenon is analyzed and considered as border collision bifurcation, and its mechanism is further discussed.

根据Forward变换器电感电流导电模式的临界条件得到了相应的稳定性边界，并对低频不稳定现象的边界碰撞分岔本质进行分析和讨论。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。