GB/Z 34447-2017照明设备的锐边试验装置和试验程序锐边试验国家标准
英文:Sharp edge testing apparatus and test procedure for lighting equipment—Tests for sharpness of edge GB/Z 34447-2017介绍:...
英文:Sharp edge testing apparatus and test procedure for lighting equipment—Tests for sharpness of edge GB/Z 34447-2017介绍:...