查询词典 stability number

In this thesis,we first consider the stability of the trivial solution to a three-unit ring network with multiple delays and without self-feedback.Most impor-tantly,we know how the number of the eigenvalues with positive real parts changes,which is fundamental for the discussion of bifurcation.

本文首先讨论了具多个时滞的不带自反馈的3元环状神经网络系统平凡解的稳定性，并得到了平凡解对应特征方程正实部根个数的变化规律。

Horizontal windspeed shear,if bigger than a critical value associated with vertical wavenumber m, factor β, hydrostatic stability N^2 and Richardson number Ri ,leads to instability of equatorial ifiternal inertial gravity wave on the y-z plane,which thus causes zonally syrmnetric disturbances to emergence and development.

只要风的水平切变足够大，大于某一临界值（该临界值与垂直波数m，β因子，静力稳定度N^2以及Richardson数Ri有关），在赤道y-z平面上的重力惯性内波也会发生不稳定，从而引起这种沿x轴对称扰动的激发产生与发展。

The critical aerostatic stability of Sutong Bridge with the Reynolds number effects was calculated by using the compiled program.

分别计算了苏通大桥在低、高雷诺数下的空气静力稳定性。

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在保荐办法的修订方面，此前收集到的主要意见包括：一是建议不要延长保荐机构对创业板公司的督导期，证监会经过研究认为，由于创业板公司规模相对较小，经营稳定性相对较低，适当延长督导期有利于积极稳妥推出创业板，故未予采纳；二是建议豁免创业板公司IPO当年即亏损的保荐人责任，证监会经研究认为，尽管创业板公司经营不稳定，但如果公司上市当年就亏损，对市场会产生较坏的影响，因此不能放松对保荐人的责任追究；三是建议放开保荐代表人签单数量限制，下一步证监会将在保荐制度相关安排中予以进一步研究，听取保荐机构意见，共同做出安排。

To achieve temporal accuracy and numerical stability when running icoFoam , a Courant number of less than 1 is required.

为了达到 icoFoam 运行时时间上的精确，数值上的稳定，要求克朗数小于1。

The examine results were analyzed with of sex, age, chronic medical history, stability of blood dynamics, the number of melaena or enterorrhagia episodes in 4 hours before imaging, former bleeding history of gastrointestinal tract, and therapeutic intervention for bleeding.

方法68例下消化道出血患者进行^99mTc—RBC显像，观察显像结果，采用Logistic多因素回归分析了解患者性别、年龄、慢性病史、检查时血流动力学指标是否稳定、检查前4h血便次数、以前消化道出血史、是否正在进行止血治疗等因素间的关系，并将核素显像定位结果与患者手术、DSA或肠镜检查结果进行比较。

Two reasons can be explained the improvements of catalytic activities after the addition of Ce. One is the increase of the thermal stability of Ni-B and Ni-P nanoamorphous alloys, which retards the nanocrystalline Ni to aggregate during the exothermal reaction of benzene hydrogenation. The other is to make their grain sizes smaller, thus it increases the number of activity center in unit mass.

说明加入Ce提高催化活性的主要作用有两方面，一是提高Ni-B和Ni-P纳米非晶态合金的热稳定性，抑制催化苯加氢反应时大量放热促使纳米晶Ni的聚集长大；二是使生成的Ni-B和Ni-P纳米非晶态合金颗粒更为细小，从而增加单位质量样品的活性中心数量。

In this paper, the generator model of constant transient voltage and the invariableness impedance model was used, and the saliency of generator is included; through the analysis of the characteristic of the network equation calculation in the transient stability analysis, a new node ordering algorithm is proposed. Better initial value can accelerate the convergence rate of the networking equations, reduce the number of iterations, thus to cut down the amount of calculating time.

本文首先建立了适合于暂态稳定分析的简单模型，其中发电机采用E_q恒定模型，考虑了发电机的暂态凸极效应，负荷采用恒定阻抗模型；研究了电力系统的暂态稳定分析方法，指出目前数值积分暂态稳定计算方法中存在的不足，主要是网络方程的求解速度过慢；分析了暂态稳定计算中网络方程的特点，将稀疏技术应用于网络方程的求解，提出了一种新的节点编号方法——最小度最小有源节点道路集算法，减少了网络方程的计算量；在进行交替迭代求解时，将预测算法应用于每一积分步网络方程功角和电压的初值估计当中，应用自回归算法和广义延拓算法，期望给出一个更有效的电压和功角初值方案，来加快方程的收敛过程，减少方程迭代的次数，以提高计算速度。

Simulation results show that the number of the network topology reconfiguration can be reduced greatly with proposed strategies. Hence the topological stability of the LEO/MEO two-tier satellite networks can be improved with acceptable cost.

仿真结果表明，与原有的策略相比，该文提出的策略能够以可接受的代价提高LEO/MEO双层卫星网络拓扑结构的稳定性。

The latter clade could be further divided into two strongly supported subclades:(Juglandaceae-Rhoipteleaceae)-Myricaceae, and (Betulaceae-Ticodendraceae)-Casuarinaceae.4 Six sequences combined analysesPhylogenetic reconstructions were performed under a number of scenarios for each of five combined data sets to elucidate the stability of the phylogeny trees.

桦木科和木麻黄科聚在一起，胡桃科和马尾树科为姐妹群再与杨梅科构成一支，这两个分支都得到很强的BS支持。核基因分析支持六个序列联合分析对核心高等金缕梅类各科间关系的分辨。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。