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Firstly, the equation of charge rate of particles was established based on the distribution of the electric field and electron density in the pulse corona discharge process.

首先，在脉冲放电烟气除尘的研究中首次建立了脉冲放电粒子的荷电机理并对粒子的荷电量进行了计算。

Firstly,the multi-signal flow graph is built for the system,and the correlation matrix is obtained from the model.

首先通过建立装备的多信号模型，得出系统的测试相关矩阵。

Firstly, Some of the basic concepts of chaotic vibration are introduced, the qualitative and quantitative methods of chaotic vibration identification are detailed, the selection of associated parameters is studied, the algorithms for calculating the maximum Lyapunov exponent, correlation dimension and periodicity ratio are provided. On the basis of analysis and comparison of different methods, the methods used in the paper are selected.

本文首先介绍了混沌振动的基本概念；评述了混沌振动识别的定性和定量方法；对有关参数的选择进行了研究；给出了计算最大Lyapunov指数、相关维数和周期比的算法；在对不同方法对比分析的基础上，选出了本文拟采用的识别方法。

Firstly, the principle of currentsoftware correlator was presented.

首先分析目前软件处理机的基本原理、特点。

Firstly, corruption leads to distortion of income, which leads to deflation by extrusion of output. Secondly, the basic consumption is distorted by distortion of resource, which result in deflation. Thirdly, exit of money because that the wealth of corruptionist can not use their money with fair and square, so corruption also leads to deflation by reduction of money.

也将从另外三个方面直接导致通货紧缩：一是腐败的收入分配产生的"挤出"效应，从而导致通货紧缩；二是腐败的"资源扭曲"造成的资源配置错误或者扭曲，导致通货紧缩；三是腐败分子"偷偷地"在没有通知银行的情况下将货币"退出"流通领域减少货币供应量，从而引发了通货紧缩等。

They are proposed firstly by Cortes and Vapnik in 1995 and have become an important research direction in the field of machine learning.

它是Cortes和Vapnik于1995年首先提出来的，已成为近年来机器学习研究的一项重大成果。

In this paper,a design method of two dimensional Linear Phase Nearly Perfect Reconstruction filter banks based on a new class of cosine modulation systems is presented,which can be described as follow: firstly,the Parks-McClellan algorithm is adopted for designing the prototype filter,then by employing cosine modulation,a series of analysis and synthesis filters can be obtained,accordingly a one-dimensional LP-NPR filter banks can be constructed;Secondly,cascading two one-dimensional LP-NPR filter banks in the form of tree structure and using the unimodular transformation,a two dimensional nonseparable LP-NPR filter banks can be obtained.

提出了一种基于一类新余弦调制系统的二维线性相位-近似完全重构滤波器组的设计方法，设计过程分为两个步骤：首先采用Parks-McClellan算法来计原型滤波器，再经过余弦调制能到一系列的线性相位分析和综合滤波器，从而可以构造一维LP-NPR滤波器组；然后利用树状结构来结合两个一维LP-NPR滤波器组，并运用单位模变换，可以得到二维不可分离LP-NPR滤波器组。

Firstly, it studies the relationships among cost, price, sales quantity and profit, and gives a optimal allocation model of indirect fixed cost and its calculating method for the firms using cost-plus pricing,. Secondly, it studies systematization of cost flow control technology and embedded it into MRP-Ⅱ. Then the model of integrating cost flow control and material flow control is presented.

本文一方面研究了成本—价格—销售量—利润之间的关系，为采用成本加成定价法的企业提出了一种间接固定成本在不同产品上的优化分摊模型，并给出了计算方法；另一方面将成本流控制技术系统化，并将其有机地嵌入MRP-Ⅱ系统中，提出了将成本流控制与物流控制有机集成的管理模式。

Firstly, modal responses were estimated by the application of robust second-order blind identification technique on the measured vibration signals. And then, modal shapes were extracted from the de-mixing matrix above. Finally, frequency and damping ratios could be obtained from the modal responses using each single degree of freedom mode.

运用该法提取系统／结构模态参数的步骤为：首先利用稳健SOBI的盲源分离方法采集的信号进行分离，然后将分离矩阵作为结构／系统的模态振型矩阵，最后再对各个分离后的单自由度信号提取频率、阻尼比参数。

Firstly, analysis method of coumarin in melilotus was researched.

首先，对草木樨中的香豆素进行了分析方法的研究。

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。