分布参数

Values, the chemical composition of biotite of them and their petrochemical composition on the corresponding dia grams are all distributed transitionally between the "typi cal areas"; 2 that the micro-elements indicating genesis and the REE distribution parttens display the transitional change from the mines in North to those in South in this region; 3 that their K-Ar age of biotite is distinctively inconsistent with their Rb-Sr age of total rocks; and 4 that there occur several rock body groups with various genetic features which are formed at the corresponding time in the same Pb-Zn ore fields.

具体表现在全岩锶同位素初始比值、黑云母化学成分，岩石化学成分在相应图解上不集中而呈&过渡态&分布；微量元素成因特征及稀土分配型式在本区空间上呈&过渡态&展布；岩浆分异演化过程中各种地球化学演化参数不连续变化；全岩Rb-Sr同位素年龄与黑云母K-Ar年龄值严重不合；同一矿区，普遍发育不同岩性组合的岩体群等等。因此，地洼型多因复成成岩成矿作用在湘南铅锌矿床形成过程中是一个带有普遍性的区域成矿规律。

The two transpolar shortwave time signal circuits,Moscow and Irkutsk to the Great Wall Station in Antarctica, are used to study the fading characters for shortwave long circuit.

为了研究过极区的短波长电路的衰落特性，在南极长城站收测莫斯科、依尔库茨克的短波授时台信号，并给出各频率对应的衰落深度、衰落率、衰落平均持续时间等参数的统计特征和衰落幅度分布曲线。

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

This paper presented an adaptive 3D fractal reconstruction algorithm to overcome the shortcomings of conventional methods, such as time consuming, ununiformity, parametric complexity.

针对常规三维分形地形重建算法具有的速度慢、插值点分布不均匀、参数设置复杂等缺点，提出自适应的三维分形地形重建算法。

This distortion measure can reflect the different validness of each dimension with different distribution in feature space,so that it can not only improve the speaker recognition system performance but also enhance the system time robustness.

由于不同分布的各维参数对话者识别的有效性各不相同，因此，文章提出了一种能反映这种有效性差别的失真测度，即：方差归一化失真测度。

The interpretation of fracture and vuggy saturation,the determination of effective thickness and the distribution of reservoir are the main problems in reserve calculation.

缝洞型潜山油藏具有特殊的储集类型和特征，其饱和度参数解释、有效厚度划分、储层平面分布的确定是储量计算中的难题。

The fractured-vuggy reservoir of buried hill has special storage space and reservoir characteristics. The interpretation of fracture and vuggy saturation, the determination of effective thickness and the distribution of reservoir are the main problems in reserve calculation.

缝洞型潜山油藏具有特殊的储集类型和特征，其饱和度参数解释、有效厚度划分、储层平面分布的确定是储量计算中的难题。

In order to solve the problem of crevice corrosion resulted from the warping and cracking of the coatings, the feasibility of cathodic polarization with square wave pulse and the effectiveness of its control over wedgy crevice corrosion were explored.

在外加阴极极化的条件下，缝内极化电流相对较小，缝内极化电位比缝外金属略正；缝内Cl〓浓度降低，pH值显著升高；测定了这些参数在缝内的位置分布。

The velocity and temperature numerical simulation at three dimentions in four-corner-burners boiler is conducted. The velocity and temperature distribution of weste gas in the old and transformed boiler are compared which is helpful to optimize the parameters of the burners for design and operation.

在新型回流区分级着火燃烧器的应用实践中，对四角切圆锅炉炉内三维速度场和温度场进行了数值模拟，比较了改造前后炉内烟速和烟温分布，有助于优选燃烧器的设计运行参数。

Numerical simulation of micropolar fluids elastic lubrication with mixed friction in mechanical seal;2. The basic line contact elasto-hydrodynamic lubrication equations for micropolar fluids were developed on the basis of the theory of micropolar fluids.

应用微极流体理论，考虑流体的可压缩性，建立线接触微极流体动力润滑的基本方程，进行固液两相流体稳态流动弹流润滑数值分析，获得了润滑油膜压力、形状以及摩擦力分布，分析了微极参数对润滑性能的影响，并与不可压缩流体结果进行比较。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。