视频字符叠加技术，是将数字字符信号通过一定的方式叠加在视频图像屏幕上，近年来随着视频监控的广泛应用。需要字符叠加的场合也越来......

The development of a numerical model for the melting process of Al-Ti alloy target material in vacuum induction furnace ......

As located in the junction of three tectonic plates (the Eurasian plate, the Indian plate and the west Pacific plate), t......