Finally, wire bonding technics in the retral packaging of Schottky power diodes is optimized by orthogonal experiment design. 最后用正交试验的方法对肖特基器件后部封装中的压焊工艺进行了参数优化设计。
Methods Chest CT scanning was performed in 100 healthy volunteers. Various parameters of the anterior mediastinum were measured, including position ( shift distance from medial line of the body), frontal and retral width, and anterioposterior dimension. 方法在CT上测量100例健康志愿者隆突层面前纵隔的前后径、前横径、后横径及位置(偏离人体中线的距离)。
The relative displacement between the front and retral loading location is emphasized. 着重研究了前后油缸加载点的相对位移。