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The conditions of power system self-excitation and the influence of the automatic voltage regulator on the self-excitation are studied, and the system response characteristics of power system in the case of self-excitation are investigated.

最后，分析了电力系统自激的产生条件以及励磁调节器对自激的影响，研究了自激发生后系统的动态过程。

The conditions of self - excitation and the influence of automatic voltage regulator on power system self-excitation are analyzed and the system reaponse characteristics of power system under self-excitation are summarized.

分析了电力系统自激的产生条件及励磁调节器对自激的影响，研究了自激发生后系统的动态过程，提出了以发电机机端电压、发电机转子角速度以及励磁电流这3个量的变化规律作为判断复杂电力系统发生自激的依据，并以一个典型的双机系统的仿真结果验证了判据的有效性。

Only God has no limits on power (although He does have the power of self-limitation). That means the devil has unanswered questions (he can't "read" God's mind —nor can he read ours). As a creature he can be in only one place at one time (although he has thousands of fallen angels covering mankind).

魔鬼也不能给人解答，因它不能明白上帝心中所想，也不能知道我们心中所想；魔鬼是被造的，所以只能在一个时间内在一个地方（虽然它拥有千万堕落的天使供它驱使且散布在人类中）。

However, self-motion movement's power by unequal exercise.balance wheel uneven move at any moment , so mainspring acceptant power is not enough regular,and it will have a effect on movement's veracity.

而从动表芯是由不规矩的运动提求能源的，摇轮随时随地以不平均的方法活动，这样发条接收的力气就不够匀称，因而多多要影响到表芯的精确性。

Nowadays we suggest: circular lifting electromagnets for scrap metal, from small and lightweight (series EMG 078) up to superheavyweight (series EMG 230); electromagnets for loading of slabs, rail, section and sheet products, tubes, steel coils; permanent lifting magnets for loading small parties of metal; grabs for scrap metal and clamshells for loose materials; pendant and self-unloading electromagnetic separators, electromagnetic pulleys, sources of a uninterrupted power supply and control system for electromagnets; power supply systems of electromagnets for installation on any mobile excavators; traverses all types; electronic device for weighing.

如今，我们建议：圆形的举升电磁铁适用于碎金属片，从小型与轻型（EMG 078系列）到超重型（EMG 230系列），永久举升磁铁适用于装载金属小件，抓取装置适用于碎金属片，蛤壳适用于松散物料。采用新技术的电磁铁设计与应用的持续完善，使得其容量平均增加了20-30%，这一数字是通过在我们公司进行的如同用户实际操作的大量测试得以确认的。

That view is wrong on two counts: it exaggerates the disappearance of the security forces during the Yeltsin years, and it understates the continuing, law-scoffing power of many oligarchs, albeit aligned with state power rather than semi-independent.

这个说法有两方面是错误的：它过分夸大了叶利钦时代安全力量的消失；对许多寡头们所继续拥有且蔑视法律的权力只是轻描淡写，虽然这些寡头们与国家权力结盟，而不是自立门户。

In this paper we propose a low-power frame buffer design called word line charge recycling frame buffer, which can be used in TFT-LCD. Based on the sequential access feature of the frame buffer, our design use the charge recycling technique to reduce the frame buffer power dissipated in the word lines switches.

中文摘要在本论文中，我们将提出一个低功率的页面缓冲区设计，利用液晶薄膜显示器循序存取页面缓冲区的特性，使用充电再利用的技术，将字元线所充电的电量导引到下一条字元线，以降低动态的功率消耗。

During the testing process, the circuit use the on-off power supply's pull and push structure as prototype, gaining a additional LC in series resonance circuit, which is also a opposite sharp structure. In the same frequency,and in the work state of work voltage, receiving even more high efficiency and output power.

该电路在实验过程中以开关电源推挽式结构为原型，改进得到一个附加了LC串联谐振回路的反激式结构，在同等工作频率、工作电压的状态下，得到了比推挽式结构更高的效率和输出功率。

On December 28, 2004, thirteen faults have happened successively, a large area of ice flashover of 500 kV power system happened and seven 500 kV transmission lines tripped out due to the influence of the sleety climate in central china power grid.

2004年12日28日，由于雨雪天气影响，华中500kV电网发生大面积冰闪，先后发生13次故障，7条500kV线路相继跳闸，为华中电网历史上罕见的事故。

So, When the power system is in transient, the sliding mode control rule is chose directly to make transient component decrease quickly, and when the power system is in stability, the direct current control method based on voltage space vector method is imported to make the error current reduce to zero by inches and avoid surge.

为此，当系统处于暂态时，论文直接选择滑模控制率使暂态分量迅速减小，当系统处于稳态时，引入基于电压空间矢量的直接电流控制方法，使误差电流趋于0缓慢变化，在有效补偿系统无功的同时，提高了系统的动态特性，并大大降低了系统振荡的可能性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。