GB/T 5019.5-2023以云母为基的绝缘材料第5部分:电热设备用硬质云母板国家标准
英文:Insulating materials based on mica—Part 5:Rigid mica materials for heating equipment GB/T 5019.5-2023介绍: 国家标准《以云母为基的绝...
英文:Insulating materials based on mica—Part 5:Rigid mica materials for heating equipment GB/T 5019.5-2023介绍: 国家标准《以云母为基的绝...