关于化学产品纯度的问题,6N,7N.我在查阅产品信息的时候有些产品会提到一个6N级或者是7N级,这个是不是指他的纯度啊?是不是6N就代表99.9999,而7N就代表 99.99999%呢?

来源:学生作业帮助网 编辑:作业帮 时间:2024/09/14 14:33:28
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