1.Mechanical polishing Mechanical polishing ke mokhoa oa ho bentša o tlosa likarolo tse bentšitsoeng tsa convex ka ho seha le ho senyeha ha polasetiki ea holim'a thepa ho fumana sebaka se boreleli.Ka kakaretso, ho sebelisoa likhoele tsa oli, mabili a boea, sandpaper, joalo-joalo, haholo ts'ebetso ea matsoho, le ts'ebetso e khethehileng ...
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