Introduction: Heidelberg retina angiograph (HRA) was introduced for fluorescein and indocianine green angiograph. HRA works as a digitalized confocal scanning
This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW (gas tungsten arc wel
The ageing behavior of a pre-stretched thick plate of Al-Zn-Mg-Cu alloy was systemically studied including one-step ageing, two-step ageing, and retrogression a