使发散

Proposing conjectures and hypothesis is not only the core link of science inquiry, but also the students'first step of self-judgment in understanding things and the most dynamic stage of making students'thinking dispersive.

提出猜想与假设是科学探究的核心环节，同时又是学生认识事物的第一步自我式判断，是使学生思维发散的最为活跃的阶段。

Secondly, when kalman filter has reached steady state its error covariance will have a very small stationary value, namely filter dropping off'. Thirdly, the traditional kalman filter cannot adjust its filter parameters with statistic characteristic of the noise. To overcome the deficiency of kalman filter, an SVD-based adaptive kalman filter is put forward in the paper. The filter restrains the filter divergence by matrix singular value decomposition. The eigenvalues and eigenvectors of the matrix are insensitive to tiny change of matrix element and acceptable error.

然而，传统的卡尔曼滤波器存在以下问题：问题一，因噪声统计特性估计不准确和计算机舍入误差引起的滤波发散现象；问题二，在卡尔曼滤波器达到稳态时，其误差方差阵将饱和使其对信号的突变变得不敏感，问题三，传统的卡尔曼滤波器对滤波参数无自适应能力，不能随着噪声统计特性的改变而调整自身的滤波参数。

We find the poles of determinant of the S-matrix are equivalent to the zeros of the Wronskian in the Laplace picture.

在散射的过程里，我们可以定义S-矩阵，而我们发现那些使S-矩阵的行列式发散的模，与在拉普拉斯转换下，Wronskian零点定义下的模是等价的。

Scale emergence makes the parts relationship network becoming a scale-free network, and the emanative network whose local world is dense and other is sparse is changed gradually on the network structure.

标度涌现使零部件关系网络成为无标度网络，在结构上逐渐演变为局部密集、大部分稀疏的发散型网络。

One theory was that rifle fire from the Housatonic had put a hole in the Hunley, flooding it.

有种说法趁，从HOUSATONIC号发散出来的火焰射穿了杭力号，使其进水。

Simulative results show that the electron beam can be transported in the unmagnetized plasma-filled for two reasons. The first, the plasma neutralizes the majority of the space charge forces within the beam. The second, radial electric field generated by electron beam interaction with the plasma leads the beam to converge along axis. By PIC simulation, we find that atomic mass of the background ion effects on the Characteristics of the plasma-filled devices.

非磁化等离子体填充的RBWO-FEL的模拟表明只有在一较窄的背景等离子体密度范围内，电子注才能良好传输，产生泵波及激光功率输出，并都存在有峰值功率点，同实验观测到的结果完全吻合；该范围内，电子注的传输是由于背景离子中和了注中径向发散空间电荷力及注在等离子体中产生的径向的电场使注在轴向汇聚。

To make trig-cluster constringed by acquiring other orthogonal base.The third problem brought on the birth of wavelet that has gone through about a hundred years.

3求得另外的正交基，使时于在三角族情形下的发散现象在此时不致发生。

Blast Wave A wave of flame radiates outward from the caster , damaging all enemies caught within the blast for 160 to 192 Fire damage , and dazing them for 6 seconds .

冲击波一道烈焰从你的身下向四周发散，对你四周的敌人造成160到192点火焰伤害，并且使他们晕眩6秒

Due to the narrow beam divergence angle and the large distance between the satellites, the pointing from one satellite to another is complicated.

但由于光束发散角小和卫星间的距离远，使一颗卫星与另一颗卫星之间的对准变得很困难。

Thus by using longer crystal and focused pump beam in OPA or OPO, the gain of amplification can be increased and oscillation threshold be reduced.

本文从理论上和实验上证实，OBNC对OPA和OPO参量作用有特别重要的意义，它可以使泵光束和信号光束在非线性晶体中实现最大的交叠并允许泵光束有较大的发散度，从而可以通过加长非线性晶体的长度或会聚泵光以增加参量作用的增益和降低振荡的阈值。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。