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For the principal component, namely the voltage stability analysis function, three kinds of nodal injection power modes are defined, i.e., the random varying direction of load, the response setting direction of generator and the ratio of active power component to reactive power component in load power, and a continuous power flow model that is easy to utilize and comprehend by dispatching center is built, based on this model three kinds of formulae to calculate the sensitivities of loading margin with respect to three kinds of nodal injection power modes are derived respectively, and on this basis the influence of nodal injection power mode on loading margin can be analyzed in order that the voltage collapse can be avoided by fast implementing early warning of voltage stability and adopting effective corrective control.

文章针对N-EMS的主要组成部分--电压稳定分析功能，定义了3类节点注入功率模式：负荷的随机变化方向、发电机的响应设定方向、负荷的有功和无功比例，建立了易于被调度中心运用和理解的连续潮流模型，在此模型基础上分别推导得到负荷裕度对3类模式的灵敏度公式，据此分析节点注入功率模式对负荷裕度的影响，以便能够快速进行电压稳定预警和采取有效的校正控制来避免电压崩溃。

Or the fact that there is a gain in time for those who have lost employment, time in which to reanalyze one's life and direction and make fruitful changes to oneself and one's sense of direction.

或者，那些失业的人在时间上有了得，那是重新分析自己生活、方向，对自己、方向感做出成果性变化的时间。

In rectilinear motion,the extremum of pullvaries with the factor;angleθ=α=arctgμ(μ:friction factor;angleθ:the angle between the direction of pull and the motion direction).

在直线运动中拉力 F的极值随摩擦系数μ的变化而变化，当θ=α=arctgμ(μ为摩擦系数，θ角为拉力 F和运动方向的夹角)时，F有极小

Experimental result shows that when the incident is vertically polarized, the head direction RCS average's variation along the relative curvature is of "W" shape and has 2 minimum values; when horizontally polarized, the head direction RCS average's variation is different in two bend fashions.

实验结果表明，垂直极化下头向雷达散射截面均值随弯度呈"W"形变化，有两个极小值；水平极化下两种弯折方式头向雷达散射截面均值变化趋势差异较大，上下弯折时呈"W"形变化，水平弯折时单调降低。

Feed rate, f, may be defined as the small relative movement per cycle of the cutting tool in a direction usually normal to the cutting speed direction.

进给率 f 可定义为每循环切削刀具在通常为垂直于切削速度方向的次要相对运动。

The research work done is presented as follows:Compound dewatering technique of vacuum tube well is an effective technology for solving the dewatering problems of aquitard and interface relict water according to physical simulation test and field test. The variation laws, such as degree of vacuum, pore water pressure in different strata, have been studied. The results show that there is a certain scope of influence of vacuum in strata, and the vacuum degree in the horizontal direction decreases gradually with the increase of the distance from the main well; the change law of degree of vacuum in the vertical direction increases firstly and then decreases with the depth of soil strata, and changes with different soil nature and depth; changes of pore water pressure in soil strata has also shown a similar law of degree of vacuum.

主要研究工作如下：通过室内物理模拟试验和现场试验均证明了真空管井复合降水技术用于解决弱透水层和界面残留水疏干难题的有效性；并且对不同地层中真空度、孔隙水压力等变化规律进行了研究，发现地层中真空度均有一定的影响范围，且真空度在水平方向上随距主井距离的增加而逐渐降低；在垂直方向上真空度随深度总的规律是先增加后降低，并随土层性质及深度的不同而变化；土层内孔隙水压力也呈现出与真空度类似的变化规律。

As previously mentioned, the size of the paper retractility with the fibers'packing, the direction of the grain direction of expansion rate is less than the rate of expansion and contraction of the transverse grain.

正如前面所讲过的，纸张的伸缩性大小同纤维排列的方向有关，直丝绺方向的伸缩率小于横丝绺伸缩率。

Rhenium diboride is as incompressible as diamond in one direction, and in the other direction, just slightly more compressible.

在某个方向上，二硼化铼的'不可压缩性'与金刚石相同，在另一个方向上，二硼化铼的'可压缩性'仅比金刚石稍高。

In general cases, the demixing matrix in ICA is not in the standard Euclideanspace but in the Riemannian space. Thus the tradition gradient direction is not the speedest direction.

一般情况下， ICA中的解混合矩阵所在的参数空间并非欧式空间，而是黎曼空间，因此，传统梯度所得到的方向并非最速方向。

The error is described by weighted average variance-covariance of root mean square error in curve normal direction, and error in the direction with maximum error respectively.

曲线上任意点的误差由端点及距离误差传播导出的误差之加权平均值的协方差表示。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。