Meeting details: 929xin.org/meeting
Golden bean luminum light time (4): three functions of light (by frequency size of spectrum)

Golden bean luminum light time (4): three functions of light (by frequency size of spectrum)

Overseas can view the video by clicking on the following link:

Golden bean luminous hour (4)

 
The mainland can view the video by clicking on the following link:

Golden bean luminous hour (4)

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