标准摘要
[中文适用范围]： 给出了带有金属或塑料灯罩环的金属或塑料和陶瓷灯座的螺纹限制尺寸。 [外文原描述]： Gives limit dimensions of thread for metal or plastic and ceramic lampholders with shade holder rings made of metal or plastic. Dimensions
英文名称Barrel thread for lampholders with shade holder ring