n.鸟嘌呤（核酸的基本成分）...

There are just four kinds: adenine, thymine, guanine and cytosine.只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.The DNA base composition is 32.6 - 33.1 mol % guanine plus cytosine.DNA(脱氧核糖核酸)的G+C 摩尔百分含量为32.6—33.1.It is a layer of guanine ...

guanine的音标：guanine的英式发音音标为：['gwɑ:ni:n]guanine的美式发音音标为：['gwɑnin]...

isoguanine的音标：isoguanine的英式发音音标为：[aɪsəʊ'gwɑ:ni:n]isoguanine的美式发音音标为：[aɪsoʊ'gwɑnin]...

n.异鸟嘌呤...