Electric lighting fire safety evacuation sign 电光源型消防安全疏散标志
Microwave sulfur lamp ( msl ) is a kind of effective electrodeless electrical light source 微波硫灯是一种高效节能的无电极电光源。
Abstract ： the luminous efficien is the key parameter of electric light sources energy2saving performance 摘要:光效是电光源节能性能的关键参数。
The products made by the factory seven categories , more the 40 specifications , and 200 assortments 厂房宽敞明亮，坐落在花园之中，是电光源生产的绝佳场所。
By joint efforts , it is our hope to promote both trade and friendship to our mutual advantage 我公司愿与国内外各界朋友携手合作，共图发展，共创电光源世界的美好明天。
Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuumtubes 电真空器件及电光源用钨钼材料电阻率的测试方法
Method for the determination of the resistivity of tungsten and molybdenum used in electric light sources and vacuum tubes 电真空器件及电光源用钨钼材料电阻率的测试方法
Osram , a subsidiary company of siemens , is one of the two largest lighting manufacturers in the world 德国照明专家欧司朗，是西门子集团的重要成员,世界两大电光源制造商之一。
Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuumtubes 电真空器件及电光源用细钨丝钼丝和薄带密度的测试方法
Method for measuring the density of the fine wire and ribbon of tungsten and molybdenum used in electric light sources and vacuum tubes 电真空器件及电光源用细钨丝钼丝和薄带密度的测试方法
