Iintsimbi ezininzi kunye neekhompawundi zazo kufuneka zenziwe zibe ziifilim ezibhityileyo phambi kokuba zisetyenziswe kwiimveliso zobugcisa ezifana ne-electronics, iziboniso, iiseli zamafutha, okanye usetyenziso lwe-catalytic.Nangona kunjalo, isinyithi "esinganyangekiyo", kubandakanya izinto ezifana neplatinam, iridium, ruth...
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