Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.
针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。
Researchers have long known that modern humans lack the genetic variation found in other living primates, such as chimpanzees or gorillas, even though our current population size is so much larger.
科学家以前就知道，虽然我们人口众多，但现代人不像其它现存的灵长类动物（比如黑猩猩和大猩猩）有那么多遗传变异。
The IPCC makes it plain that the current and projected climate change is not simply “natural variation”, but “very likely” (meaning at least 90%) the result of human activity.
IPCC指出，当前和预期内的气候变化并不简单是“自然的变化”，而非常可能是人类活动的结果（意思是至少90%）。
This is a variation of replication strategy where the regular commits are for the current node and the code can trigger replication at a logical point.
这是复制策略的一种变化，其中常规提交是针对当前节点的，而这个节点可以逻辑点触发复制。
The most common version is H1N1, and the current virus causing concern is a new variation of that virus.
最普通的病毒为H1N1，而现在大家最为关注的那个病毒则是这一病毒的变体。
The current research involved a re-analysis of data fromdozens of previous studies, which included more than 218, 000 participants withat least one copy of an FTO variation.
目前的研究涉及到来自于几十项以前的研究数据的重新分析，其中包括了超过218 000名带有至少一个FTO基因变异体的参加者。
Furthermore the distribution and variation of the electrostatic potential and layer ionospheric current density at the northern hemisphere are calculated by the dynamo theory.
继而从发电机理论得到了电离层电位及层电流密度在北半球的分布和变化。
A relationship between the earthquake occurrence and the abnormal variation of directions of earth current is proposed.
提出了地震与地下电流方向异常变化间的一种关系。
The present paper discusses the theoretical problems concerning the possibility of predicting earthquakes in the light of the abnormal variation of directions of earth current.
本文讨论了利用地下电流方向异常变化预报地震可能性的理论问题。
Based on T type filter, the new ballast can achieve a wide dimming range with a very narrow frequency variation range, and it can operate with low lamp current crest factor.
基于T型滤波器的调光方法，能在很窄的工作频率范围内实现深度调光，同时具有灯电流波峰因数低的优点。
The authors propose an additional control strategy, which changes the power or current order according to the variation of system frequency, thus the power balance of the grid can be implemented.
提出了一种附加控制策略，该附加控制策略根据系统频率的变化改变直流系统的功率或电流指令，从而实现系统功率的平衡。
Due to the uncertainties in the climate change impact assessment, current forecasts for the future variation trend of runoff in the Yellow River Basin are inconsistent.
由于气候变化影响评价中存在的不确定性，目前对黄河流域未来径流变化趋势的预测并不一致。
On the basis of measurement results, the regularity of general distribution and individual variation of capacity current in coal mine are given.
在对大量实测数据分析的基础上，给出了煤矿电网电容电流的总体分布规律，个体变化规律。
After studying the law of variation for transient current, the author brings out the basic thought for its control.
通过讨论瞬时电流的变化规律，提出控制瞬时电流的基本思路。
This model can be used to describe and predict the most bath depth at any current and the variation tendency of the bath depth with the increase of ingot height.
这一数学模式可用于描述和预示任意重熔电流时的最大熔池深度及随锭高增长熔池深度变化的趋向。
Analyzing the variation of the nozzle arc parameters at current zero, in addition, analyzing the breaking property of the studied circuit breaker on the basis of the theory.
分析了电流过零时喷口内电弧参数变化的原因，此外，从理论上对所研究的断路器的开断性能进行了分析。
This paper proposes a new method of sensorless vector control for induction motors, in which the motor speed is estimated by both instantaneous reactive power and variation of magnetizing current.
提出了一种异步电机无速度传感器矢量控制的新方法，用瞬时无功功率和励磁电流变化来估计电机转速。
A novel method named equivalent current density based on finite element method was developed for parametric variation problem of signal transmission caused by the external environment.
针对电信号的有效传输受外界环境引起自身参数变化的问题，提出了一种基于有限元方法求取传输参数的等效电流密度法。
Furthermore, the distribution and variation of the electrostatic potential and layer ionospheric current density at the Northern Hemisphere are calculated by the dynamo theory.
继而从发电机理论得到了电离层电位及层电流密度在北半球的分布和变化。
The basic current has the annual variation under the influences of solar radiation, earth's surface temperature and condensation heatings, all with an annual period.
其次，在具有年周期的太阳辐射、垫面温度及凝结加热的作用下，基本气流以年周期变化。
It is pointed out, while expounding the principle of chopper speed variation, that the value of peak current can affect the service life of components and so it is necessary to control.
文章阐述了斩波调速原理，指出峰值电流的大小会影响元器件的寿命，所以有必要对瞬时电流的大小进行控制。
The ECFC, in which experimental parameters (a shift in a peak potential and a variation in a peak current) are included, appears to be a characteristic function for a particular metal ligand system.
含有极谱实验参数(峰电位的移动和峰电流的变化)的实验络合物形成曲线是特定金属络合物体系的特征函数。
As to the results of simulation, compared and discussed the (parameters) that effect stray current and potential variation distribution, and proposed the theory basement for the system design.
结合仿真计算的结果，对影响杂散电流和接触电压分布的参数进行了比较和讨论，为系统设计提供了理论基础。
The improvement anti-lightning stroke measure was proved by the variation of lightning trip-out rate and the tower-drainage of lightning current.
并根据雷击跳闸率的变化和雷电流在杆塔中的分流情况，说明改进防雷措施。
It is analyzed the variation of current and torque during induction motor starting process.
分析了异步电动机在起动过程中电流和转矩的变化情况。
By using the lightning data from 2002 to 2004 in Suzhou, lightning characteristics such as monthly variation, daily variation, intensity of lightning current and lightning density are analyzed.
利用苏州地区2002 ~ 2004年闪电定位系统监测资料，分析了该地区地闪的月变化、日变化、强度、闪电密度等特征。
Using the current data in the Qiongzhou Strait, we studied the seasonal variation characteristics of residual currents.
本文通过利用多年的琼州海峡海流实测资料，研究了琼州海峡潮余流场的季节性变化特征。
Using the current data in the Qiongzhou Strait, we studied the seasonal variation characteristics of residual currents.
本文通过利用多年的琼州海峡海流实测资料，研究了琼州海峡潮余流场的季节性变化特征。
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