What is the differe...
By jackery07
3
0
0
  • Short Story
  • blue
  • engraver
  • green
  • laser
  • pointer

Description

HTPOW Shop High Power Laser Pointer https://www.htpow.com/high-powered-30000mw-blue-laserpointer-445nm-worlds-brightest-p-1027.html

激光和红外光有什么区别？

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What is t...
by jackery07
3
0
0
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