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A1
上下同為50X, 請比較兩者共晶胞大小差異. 照片A1攝自肉厚15mm鑄件. A2攝自肉厚50mm玻璃模(有加冷鉄, 但不夠大). Compare photos A1 and A2 for the difference in the size of eutectic cells.
A2
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A1
上下同為50X, 請比較兩者共晶胞大小差異. 照片A1攝自肉厚15mm鑄件. A2攝自肉厚50mm玻璃模(有加冷鉄, 但不夠大). Compare photos A1 and A2 for the difference in the size of eutectic cells.
A2
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