CNA
- abbr. 加拿大核协会（ Canadian Nuclear Association）；海军分析中心（Center for Naval Analysis）；中央通讯社（Central News Agency）；思科网络技术学院（Cisco Networking Academy）
网络释义专业释义英英释义
柯林斯英汉双解大词典
CNA
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1.
ABBREVIATION for in South Africa Central News Agency, a national stationery chain (南非)中央新闻经销处; 一家全国文具连锁店
双语例句原声例句权威例句
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Under the ship, he printed in big red letters: C-O-N-G-R-A-T-U-L-A-T-I-O-N-S!
在船下面，他用红色大字写着：C-O-N-G-R-A-T-U-L-A-T-I-O-N-S！
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C/N ratio can be taken as a rooting index of elm tip.
碳/氮比率可作为白榆新梢生根的指标。
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So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.
这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。
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The only evidence was cut into a tree and a fence: the letters C-R-O and the word Croatoan,C-R-O-A-T-O-A-N.
VOA: special.2009.08.17
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So, if we think about the second case here where we have c n minus, now we're talking about a molecule with a net charge of negative 1.
那么，如果我们考虑的是第二个例子,也就是氰离子，那么现在我们讨论的是一个净电荷量为负一的分子。
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So, let's try another example here, and let's try a case now where instead of dealing with a neutral molecule we have an ion, so we have c n minus.
那么，让我们来试一下另外一个例子，这次不是一个中性原子,而是一个离子，氰离子。
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