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。
应用推荐