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caidao737:TRD是什么意思? (2017-08-14 06:52) kMS5h~D[
r90048song:光斑直徑7mm (2017-08-14 17:07) KE#$+,?
caidao737:您的传播距离上20米以内?光源尺度为12-14mm? (2017-08-22 15:10) q'by;g*m
r90048song:是的,光源發散角53度 (2017-08-23 09:25) IvPA|8(
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