1. Iglasi yecrystal Iikomityi zecrystal nazo ziyikomityi.Izithako eziphambili ziyi-silicon dioxide, kodwa ukuqaliswa kwe-lead, i-cymbal, i-zinc, i-titanium kunye nezinye izinto zingeniswa.Ngenxa yokuba le glasi inokukhanya okuphezulu kunye nesalathiso se-refractive, ukujonga kwayo kwangaphandle kucocekile kwaye kuyikristale, ngoko ke ...
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