Guanine A nitrogenous base found in DNA and RNA.Guanine has a pruine ring structure.
是存在于DNA与RNA中的一碱基，具有一个嘌呤环结构。
Malt extract is made by extracting the soluble products from sprouted grain,used in mycological as a source of carbohydrate and nitrogenous.
性状本品系大麦提的水溶，用于配制真菌培养基，提供碳水化合源。
Preoxygenation replaces the primarily nitrogenous mixture of ambient air, which constitutes the patient's functional residual capacity, with oxygen.
这样可以用氧气代之前被气占据的肺泡。
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Each composition of this nitrogenous base, pentose sugar, and phosphate group is called Nucleotide.
种含氮碱、戊糖和磷酸每一种组成称为核苷酸。
So if we're looking at the nitrogenous bases, these are the bases on the inside of DNA, this ladder.
所以如果我们观察含氮碱，就是 DNA 内部碱，个梯子。
Now this business of taking out the nitrogenous trash is one of the urinary system's biggest jobs.
现在个清除含氮工作是泌尿系统最重要工作之一。
What goes off the inside, attached to the sugars is going to be the base or the nitrogenous base.
与糖相连、位于内侧成分是碱，即含氮碱。
Other nitrogenous wastes include uric acid and creatinine.
其他含氮废物包括尿酸和肌酐。
I was congested from having breathed all that nitrogenous place that's in the air.
我因为吸入了空气中所有氮化合物而感到鼻塞。
One of the most important things the kidneys excrete is nitrogenous waste.
肾脏排出最重要东西之一是含氮废物。
And they also had to, especially terrestrial ones, they also had to get rid of nitrogenous waste.
它们，尤其是陆生生物，还需要排除含氮废物。
The building blocks of those are nucleotides, which are simply a sugar, a phosphate group and then a nitrogenous base.
生物大分子本构件是核苷酸，它由一个糖分子、一个磷酸团以及一个含氮碱组成。
And then nitrogen also is going to be found on the inside of DNA. And the nitrogenous bases require nitrogen as well.
氮元素也存在于DNA内部，含氮碱同样需要氮元素。
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划词翻译
详细解释
碱基，具有一个嘌呤环结构。
生理学篇 
的水溶
，用于配制真菌培养基，提供碳水化合
种
、戊糖和磷酸
每一种组成称为核苷酸。
就是 DNA 内部
成分是碱
，即含氮碱
生物大分子
