兑水 发表于 2009-12-8 20:34:59

ASTM F 2360-2004 测定漫射光源用膜开关反光的亮度的试验...

F2360-04 Standard Test Method for Determining Luminance of a Membrane Switch Backlit with Diffuse Light Source
页: [1]
查看完整版本: ASTM F 2360-2004 测定漫射光源用膜开关反光的亮度的试验...