a1591
@a1591
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Kaohsiung City, Taiwan
a1591
3 years ago 6 @Edit 3 years ago
你知道生鐵、鋼、熟鐵(又稱純鐵)的差異嗎?
它們主要成分雖然都是鐵,但還是有些微的差距
生鐵的主要成分有鐵和2.0到4.3%的碳
鋼的主要成分則有鐵和0.02到2.0%的碳
熟鐵(純鐵)主要成分有鐵和小於0.02%的碳

(你學廢了嗎?

(app-shock)
#知識
a1591 想要
3 years ago 5
好想去露營啊 (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-hittable) (app-die)