又想了想那个合金密度,还是有其他解的,金可以被替代,但铂的含量要更高。总之,不会便宜了
跳了好多次井,,,,:)
本帖于 2024-03-21 10:40:47 时间, 由版主 500miles 编辑
又想了想那个合金密度,还是有其他解的,金可以被替代,但铂的含量要更高。总之,不会便宜了
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