值分布

The stability conditions are extracted by analyzing the open-loop transfer function of three-order charge PLL. It shows that the stability are mainly affected by the ratio of the two capacitors of the two-order loop filter, loop damping factor and loop zero. The ranges of these parameters are also calculated.

通过分析三阶电荷泵锁相环的开环传输函数来确定系统的稳定性条件，得出了系统的稳定性主要与二阶滤波器两电容的比值、系统的衰减因子以及系统的零点分布有关，并计算出在不产生过冲的情况下这些值的范围。

The flow-field around a hemisphere and a flat-nosed cylinder in the shock tube is simulated numerically by using non-equilibrium Navier-Stokes equations with an air chemical model of 5 species 17 reactions, and the catalytic rate constant of surface materials such as Pt, SIC:, Ni and a flight vehicle materials is determined by using the heat transfer rate of testing in the shock tube and the distribution of heat transfer rate along with the catalytic rate constants.

用5组分17个化学反应Durm-Kang空气化学模型和轴对称热化学非平衡Navier-Stokes方程，对激波管中球头和平头圆柱模型绕流流场进行了数值模拟，给出了驻点热流随催化速率常数变化的分布，并根据激波管实验测量的热流值确定了表面材料Pt、SiO2、Ni和某种飞船材料的催化速率常数，建立了数值分析高焓流动边界层催化特性的软件。

These influences can be divided into two states: friction and block interference. Based on the data of interference of bicycles on vehicles' driving in typical road section in Beijing, this paper quantitatively analyzes the velocity changing tendency of vehicles under different interference, velocity distribution frequency, and critical transformation of different interference state. The friction and block interference coefficients are also worked out, which are useful to compare interference degrees under different road conditions.

文章将自行车对机动车的影响划分摩擦干扰和阻滞干扰两种状态，通过采集北京市三个典型路段的混合交通干扰数据，定量分析了不同自行车干扰状态下机动车速度的变化趋势，以及速度分布频率，定义并计算了干扰状态相变的临界点：干扰变化阀值，进一步计算了可对不同道路条件下干扰程度进行比较的摩擦干扰系数和阻滞干扰系数。

The 3-D single phase simulation using CFX for the rod bundle channnel was going on by choosing the reasonable mathematical and physical models and boundary conditions. After a lot of numerical calculations, the sensitivity of gemotery was validated. The flow and heat transfer characteristics for several typical velocities were numerically analyzed and visually showed. The results show that the CFX simulation can be used for designing and optimizing fuel assembly in reactor engineering.

通过选定合理的数学、物理模型和边界条件，采用通用CFD程序ANSYS CFX 10.0对带有AGA-2G定位格架的5×5棒束通道流场进行了三维单相数值模拟，经过大量计算，验证了厚度、刚突等几何敏感性，得到了带定位格架棒束通道内的速度、压力和温度分布，分析了定位格架对流场、温度场的影响，直观地获得了搅混叶片的搅混效果，并将结果同实验值进行了初步比较。

Mercury concentration was higher in power plant,disused garbage dump and temples.It proved that the power plant and garbage dump were the main secondary sources.

由PM10中汞的分布可知，在热电厂、停用的生活垃圾堆放场和寺庙附近出现最高值，说明热电厂和生活垃圾堆放场是大气汞污染的重要次生来源。

An investigation on radionuclide accumulation by native halophytes and its influencing factors,plant variety and parts,soil K content and profile contribution of radionuclide,was carried out for the feasibility of radionuclide phytoremediation at a radionuclide contamination site,in China.

本研究在某放射性典型污染区域取样，测量了该区域盐生植物及其生长土壤的137Cs含量，以生物富集系数为指标，分析了不同核素土壤分布、K元素含量等因素对BC值的影响。

The commonly-used capacity calculation approaches for ramp junctions are mostly based on the American HCM method, It had been approved that the headways for vehicles following the Weibull distribution function at on-ramp junctions in urban freeway system. The paper examined the critical headway and following time by the modified drew method and the survey traffic flow data on-site. The gap-acceptance capacity calculating model was developed for on-ramp junctions of urban freeway, and the numerical integration method was used to solving the model. Finally, the capacity values were obtained in condition of different mainline design speeds and different acceleration lane lengths.

针对目前国内外匝道连接段通行能力计算以美国HCM为主的现状和不足，研究发现城市快速路入口匝道连接段车头时距服从Weibull分布规律，利用改进的Drew方法及实际现场调查交通流数据确定了临界车头时距和随车时距，建立了城市快速路入口匝道连接段通行能力的间隙接受计算模型，并利用数值积分法进行计算和求解，从而得到了主线不同设计速度及不同加速车道长度条件下的城市快速路入口匝道连接段可能通行能力值。

The mechanism of oscillation overvoltage and induction overvoltage produced in transformer windings under impulse voltage conditions, the principle of the simulation of impulse voltage distribution in transformer windings, and the experience of winding insulation design using the simulation software are theoretically summarized.

在工频电压和操作电压作用下，电力变压器绕组匝间和饼间的电压差值近似按匝数平均分布。但在雷电冲击作用下，由于电压波形的波前等值频率高达数百千赫兹，绕组匝间和饼间的电容和绕组对地的电容影响已不能忽略。

By reversing the keys of the index, the insertions become distributed across all leaf keys in the index.

通过使索引的键值逆序排列，可以使插入操作分布在索引的全部叶块中。

All ionomers had higher rate of nucleation, characterized by the higher values of Si, overall rate of crystallization, characterized by the higher values of (Tmax-T0), and narrower crystallite size distribution, characterized by the lower values of Δw, than those of pure PP and PP-g-MAH.

对于全部样品在所有的冷却速率下，Avrami指数n值均在2.5-2.8之间，说明聚丙烯结晶行为没有改变；但同时发现接枝及离子化后，成核速率加快，晶粒分布变窄，结晶总速率增大，与等温结晶动力学得到的结论一致。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。