This method firstly uses improved mean and variance to remove background, and then smooths it;
该算法首先用改进的灰度方差和均值进行初级分割，然后进行平滑；
The frequency dependent parameters of the interconnection lines are extracted by the full wave method firstly.
首先运用全波方法提取互连线的频变等效电路参数。
The method firstly organizes support vectors in clusters in feature space, and then, it finds the pre-images of the cluster centroids in feature spa.
此方法首先在特征空间中对支持向量进行聚类，然后寻找特征空间中的聚类中心在输入空间中的原像以形成约简向量集。
The electronic structures of 10 kinds of D-form and L-form amino acids have been investigated by employing AM1 semiempirical quantum chemical method firstly.
首次采用AM1半经验量子化学计算方法研究了10种D型和L型氨基酸的电子结构。
The new method firstly obtains two approximate rotational invariance relations about distributed sources central DOA by the Taylor series expansion of array steering vector.
新方法首先通过阵列方向矢量的泰勒级数展开获得关于分布源中心DOA的两个近似旋转不变关系。
The comprehensive method firstly used the new document frequency to select features to filter out some terms, and then employed the attribute reduction algorithm to eliminate redundancy.
该方法首先利用新型文档频进行特征初选以过滤掉一些词条，然后利用所提属性约简算法消除冗余。
This paper studies the two-phase flowing characteristics in gas condensate reservoir considering the capillary number effect and non-Darcy effect based on numerical solution method firstly.
首次用数值解方法研究了考虑毛管数效应、非达西效应及其耦合作用高速流动效应下凝析油气混合物渗流规律。
The channel estimation algorithm based on training-sequence method firstly introduces the definition of the training sequence and discusses the optimum training-sequence in MIMO-OFDM system.
根据最优化训练序列的设计方法分别讨论了两种最优化训练序列的导频格式：对角正交导频和相移正交导频，分析了在两种不同导频格式下的信道估计算法。
The meshing process is analyzed using line graph method firstly, calculation methods of the contact ration, multi-point contact coefficient and multi-pair contact coefficient are established;
首次采用线图法分析了其啮合过程，建立了双圆弧齿廓弧齿锥齿轮重合度、多点接触系数和多对齿接触系数计算方法；
By defining a region smoothness measure, the method firstly enhances peak-valley feature of image histogram by fuzzy set technique, and then segments image using adaptive multi-thresholding method.
该方法通过定义图像的平滑性测度，采用模糊增强技术对图像的灰度直方图进行增强，然后在增强的直方图上，利用自适应多阈值分割方法进行图像分割。
However, it is not the best method. Firstly, reading magazines and newspapers is much better a way to know a country.
然而，这不是最好的方法。首先，阅读杂志和报纸是更好的了解一个国家方式。
Firstly the article introduces the basic theory and method of financial engineering briefly to create a set of general rules on financial product analysis and investment portfolio.
报告首先简要介绍金融工程的基本原理与方法，形成金融工程实施过程中采用的金融产品分析和金融产品组合的一般性规则。
In the evaluation of highway steel truss Bridges based on the method of fracture mechanics, the plane fracture toughness K IC must be detected firstly.
应用断裂力学方法对公路钢桁桥的安全性能进行评估中，必须首先测出平面应变断裂韧度KIC。
Firstly, this method USES the continuation power flow (CPF) technique and both of static security and transient stability constraints are considered.
算法采用连续潮流(CPF)技术并考虑了系统的静态安全约束和暂态稳定约束。
Firstly, the paper analyses the metadata method of quality management, points out its flaw.
首先对现行的元数据质量管理方法进行了分析，指出其不足。
Firstly, the contact theory and the method of solving nonlinear equations are summarized.
首先，概述有限元接触理论及求解非线性方程的方法。
Firstly with microcosmic and macroscopic method, the error source in gear cutting is analysed.
首先以微观与宏观相结合的方法，分析了齿轮加工中的误差源。
Firstly, it is the method restraint.
第一是方法上的约束。
Firstly, a method of correcting INS errors based on the landmark image messages is presented.
首先，提出了一种基于地标成像原理的惯导误差校正方法。
Firstly, the method of extracting lithium from lepidolite has been studied.
首先，研究了从锂云母中提取锂的方法。
Firstly, the method of drawing up load spectrum is introduced briefly.
首先简要介绍了载荷谱的编制方法。
Firstly, the improved method judges whether the needed radial force and the torque can be simultaneously satisfied.
改进算法首先对给定的悬浮力和转矩是否能够同时满足进行了判断。
Firstly, make an accountancy analysis to three financial statements of YATAI using comparison analysis method and tendency analysis method.
第一，运用比较分析法及趋势分析法对亚泰集团三大财务报表进行会计分析。
A feasible method is firstly to test the causality between human capital and economic growth, and then to study their scalar relationship through co-integration test.
一个可行的方法是首先检验人力资本与经济增长之间的因果关系，然后再通过协整性检验对两者之间的数量关系进行分析。
The blind inverse identification arithmetic is proposed firstly, and then the input source signal is restored by the deconvolution method using the identified system model.
首先提出了一种解决盲辨识问题的算法，然后利用辨识得到的系统模型对源输入信号进行反卷积恢复。
The expression of its ambiguity function is firstly presented , the main derived method is also given, simulation results are analyzed at last.
首次给出了该随机序列的模糊函数数学表达式，对其推导过程所采用的主要方法作了叙述，并对结果进行了分析。
There are four phases in this method. Firstly, images are segmented into different regions with skin-color information and potential candidate regions are selected.
该方法分四个阶段进行，第一阶段利用彩色图像中的肤色信息进行图像区域分割，筛选出人耳可能的候选区域。
As an agglomerative hierarchical clustering algorithm, CURE firstly employs the method of representing clusters by selecting some "representative points".
CURE算法是一种凝聚的层次聚类算法，它首先提出了使用多代表点描述簇的思想。
This paper mainly studies a new method of structural damage identification-moving mass method. Firstly introduce in detail its implementing steps and theory analysis.
本文主要研究一种新型结构损伤识别方法——移动质量法，详细介绍了其实施步骤和理论分析。
Firstly, PSMs were prepared by the pulsed electrochemical etching method and the experimental conditions were optimized.
用电化学脉冲腐蚀法制备多孔硅微腔，优化了实验参数。
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