Originally posted by LittleIroN at 2006-7-8 17:48:
钛金属很轻,很贵,这对中学生来说属于常识。
Originally posted by 机动擎天柱攻型 at 2006-7-8 03:07:
不会的吧?连金刚石都能被锤子砸烂
Originally posted by LittleIroN at 2006-7-8 17:48:
钛金属很轻,很贵,这对中学生来说属于常识。
Originally posted by ghostdragon at 2006-7-10 20:40:
自然界的钛主要是以氧化物的型式存在的……
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