[化] 纳克
n. one billionth (1/1,000,000,000) gram
以上参考资料就是本词典详细汇总的词语nanogram是什么意思的翻译解释，如有错漏请向我们提供反馈意见。
And those were very low quantities, much less than even half a nanogram total.
而且含量极低 总共少于半毫微克
