搜索 - 科创

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书上是写用石蜡油保存里的但具体石蜡油是啥我也没见过.....LZ啊想保持碱金属表面的光泽度几乎不可能的就算再好的保存环境也会暗淡只是时间长短的问题

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约找到 1503 条结果，耗时 0.23 秒

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