Guanine A nitrogenous base found in DNA and RNA.Guanine has a pruine ring structure.
是存在于DNA与RNA中的一种含氮碱基，具有一环结构。
Preoxygenation replaces the primarily nitrogenous mixture of ambient air, which constitutes the patient's functional residual capacity, with oxygen.
这样可以用氧气取之前被氮气占据的肺泡。
Malt extract is made by extracting the soluble products from sprouted grain,used in mycological as a source of carbohydrate and nitrogenous.
性系大麦提取的水溶物，用于配制真菌培养基，提供碳水化合物及氮源。
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Each composition of this nitrogenous base, pentose sugar, and phosphate group is called Nucleotide.
这种氮碱基、戊糖和磷酸基的每一种组成称为核苷酸。
Now this business of taking out the nitrogenous trash is one of the urinary system's biggest jobs.
现在这个清除氮垃圾的工作是泌最重要的工作之一。
Other nitrogenous wastes include uric acid and creatinine.
其他氮废物包括酸和肌酐。
One of the most important things the kidneys excrete is nitrogenous waste.
肾脏排出的最重要的东西之一是氮废物。
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的氮化合物而感到鼻塞。
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详细解释
环结构。
活医学科普 
学篇 
之前被
系大麦提取的水溶物，用于配制真菌培养基，提供碳水化合物及
氮
最重要的工作之一。
