Struktur kristal dan sifat termal sistem sn xbi yal x1 0 x2 10 x3 30 x4 52 x5 70 y 0 dan x 52 y1 0 05 y2 0 11 y3 0 14 y4 0 19 y1 0 25 = Structure crystal and properties of thermal sn xbi yal systems x1 0 x2 10 x3 30 x4 52 x5 70 y 0 and x 52 y1 0 05 y2 0 11 y3 0 14 y4 0 19 y1 0 25