11. Engraving laser fais fab tuag sai sai?

Vim li cas 1: Ua haujlwm ntev, qhov kub ntawm dej hauv lub tank siab dhau.

Kev daws teeb meem: Hloov cov dej txias.

Vim li cas 2: Lub lens reflective tsis tau ntxuav lossis tawg.

Kev daws teeb meem: Kev ntxuav thiab hloov pauv.

Vim li cas 3: Lub Lens Focus tsis ntxuav lossis tawg.

Kev daws teeb meem: kev ntxuav thiab hloov pauv.