PREVIEW
... e did it fail?
Reflection efficiency?
No problem!
Heat dissipation problem?
It was also suppressed!
Orientation problem?
Sure?
Was it that copper ring?
Without a lens, it could compress a laser beam as thick as a person to the size of a ball, which is no problem at all.
Wasn’t the energy in the laser beam already increased by dozens of times?
What was the problem?
Perhaps our thinking co ...
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