UID:310061
图片:7884.jpg
UID:280905
caidao737:TRD是什么意思? (2017-08-14 06:52) RDi]2
r90048song:光斑直徑7mm (2017-08-14 17:07) DS(}<HK{
caidao737:您的传播距离上20米以内?光源尺度为12-14mm? (2017-08-22 15:10) TTX5EDCrC
r90048song:是的,光源發散角53度 (2017-08-23 09:25) i<C*j4qQ
UID:306737
UID:264300