QB/T 2049.11-2013.Glass bulb dimensions for lamps C、 E、F and PAR series shapes. 1范围 QB/T 2049.11规定了灯...
QB/T 2049.11-2006 电光源玻壳C型、E型、F型和PAR型玻壳尺寸系列
QB/T 2049.11-2006.Glass bulb dimensions for lamp C、E、F and PAR series shapes. 1范围 QB/T 2049.11规定了C型、...