1. Ubushushu bokufudumala, ixesha lokubamba kunye nendlela yokupholisa: Iqondo lokushisa kwesigaba se-tin bronze plate ukusuka ku-α→α+ε malunga ne-320 ℃, oko kukuthi, ubushushu bokufudumala bungaphezulu kwe-320 ℃, kwaye isakhiwo saso sisakhiwo sesigaba esisodwa, de sitshiswe kwi-930 Isakhiwo sesigaba solwelo a...
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