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https://www.nim.ac.cn/520/node/9.html 2018年第26届国际计量大会通过了修订国际单位制的决议，摩尔的定义被诠释为：1摩尔准确包含6.022 140 76 × 1023个基本单元。当用单位mol-1表达时，这个数是阿伏伽德罗常数常数的固定数值NA，也称阿伏伽德罗数值。
https://www.zhihu.com/question/24826620