Since it is an inverse problem, numerical techniques, such as discretization of the integral into a system of linear equations, are necessary.
由于这是一个反问题，一些数字技术比如将积分离散化为一个线性方程组是必需的。
The determination of particle size, together with SEM, XRD, IR, DTA, TG, inverse gas chromatography (IGC)and BET multi-layer absorption techniques were used to characterise kaolin samples.
采用粒度分析、SEM、XRD、IR、DTA和TG、反气相色谱（IGC）和BET多层吸附等测试方法对干粉磨高岭土进行分析测定。
The table tennis three treasure are variety of the combinatorial techniques; the all-round hitting point and inverse direction techniques, which play important role in the competition.
中国乒乓球队制胜因素即“三件宝”是指技术组合的多样化、击球点的全面性以及反方向技术的应用能力，这三个方面对取得比赛的胜利起着关键的作用。
Inverse fringe projection technique is one of the fast and robust optical 3d shape inspection techniques, which is applied to online or batch inspection.
反向条纹投影技术是一种应用于在线或批量检测的快速而稳定的光学三维面形检测技术。
Dynamic and static mapping techniques are introduced here as the qualitative methods while statistical methods, inverse calculation and principle component analysis are introduced a.
在定量处理方法中讨论了统计学方法、逆运算方法和主分量分析方法。
Three experimental techniques were used: the simple optical probing, the dark field imaging and the visualization of inverse phase velocity surfaces.
所采用的实验方法有简单光探针技术，暗场法以及倒速度图显示等三种。
The cationic inverse flotation techniques on the roasting-magnetic separation system is adopted to improve quality and reduce impurities in dressing plant of Jiusteel.
酒钢选矿厂采用阳离子反浮选工艺对焙烧磁选系统进行了提质降杂改造。
The mean and covariance matrixes and their inverse matrixes of all eigen vectors are obtained through measured data of the target. And the target is recognized by techniques of range discrimination.
由目标的实测数据，计算特征向量总体的均值和协方差矩阵及其逆矩阵，由距离判别法进行目标识别。
Dynamic and static mapping techniques are introduced here as the qualitative methods while statistical methods, inverse calculation and principle component analysis are introduced a.
本文提出了一种基于主分量分析法和反向传播神经网络的图像识别方法，并详细阐述了这种方法的具体实现过程。
Dynamic and static mapping techniques are introduced as the qualitative methods. Statistical methods, inverse calculation and principle component analysis are introduced as the quantitative methods.
其中在定性方法中介绍了静态和动态标测法，在定量方法中则介绍了统计学方法、逆运算方法和主分量分析方法。
Dynamic and static mapping techniques are introduced as the qualitative methods. Statistical methods, inverse calculation and principle component analysis are introduced as the quantitative methods.
其中在定性方法中介绍了静态和动态标测法，在定量方法中则介绍了统计学方法、逆运算方法和主分量分析方法。
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