中国科学家
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中国科学家发明新型稀土开采技术，未来必定提高效率[发明]？
9月16日，我国科学家成功研发出风化壳型稀土矿地区开采技术，稀土回收率有效提高30%，杂质含量降开发者_如何转开发低70%，开采时间也大大缩短至原来的七成。风化壳型稀土矿是我国著名的资源，目前普遍采用的铵盐原地[详细]
2023-09-19 07:13 分类：问答str_replace between two numerical strings
Another problem with str_replace, I would like to change the following $title data into URL by taking the $string between number in the beginning and after dash (-)[详细]
2022-12-28 17:03 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
加载中,请稍侯......