Mubhedha wemuchina
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Mineral kuzadza muchina mubhedha
Simbi, yakavezwa, simbi shell, uye zvivakwa zvakadzikama zvinozadzwa neyekufamba-famba epoxy resin-yakasungwa mineral casting
Izvi zvinoumba zvivakwa zvine manhamba nekukasira kusimba zvinopawo huwandu hwakanakisa hwehuwandu hwechigadziko uye hune simba
Zvakare inowanikwa neye radiation-inobvisa kuzadza zvinhu