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caidao737:TRD是什么意思? (2017-08-14 06:52) 6Jq3l_
r90048song:光斑直徑7mm (2017-08-14 17:07) N'-[>w7vK2
caidao737:您的传播距离上20米以内?光源尺度为12-14mm? (2017-08-22 15:10) ruvfp_:
r90048song:是的,光源發散角53度 (2017-08-23 09:25) O}Pqbx&
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