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- Adenine A nitrogenous base (6-amino-purine)found in DNA and RNA. 腺嘌呤：在DNA和RNA中发现的含氮的碱基（6－氨基嘌呤）。
- Guanine A nitrogenous base found in DNA and RNA.Guanine has a pruine ring structure. 鸟嘌呤：是存在于DNA与RNA中的一种含氮碱基，具有一个嘌呤环结构。
- The co-condesation polymer of cyanurotriamide and nitrogenous base S with formaldehyde as the coupler and a capping agnt can be used as a good retanning agent. 以三聚氰胺及含氮碱S为基本原料,辅以适当的偶联剂与封端剂进行缩合共聚,缩聚产物可用作复鞣剂。
- The nitrogen base controlled atmosphere continuous brazing furnace is the new brazing equipment. 文章介绍了现代用于冷轧不锈带钢生产的连续退火炉的组成及结构。
- A (Adenine): One of two purines that are used as nitrogenous bases . 腺嘌呤：作为含氮碱基的两种嘌呤中的一种。
- The sequence of nitrogenous Bases along a strand of DNA determines the genetic code. 去氧核糖核酸串上的氮基排序决定了遗传密码。
- The application and constitution of nitrogen based atmosphere nitrocarburizing production line are intorduced. 介绍了氮基气氛在气体软氮化生产线上的应用和生产线的组成及作用。
- The nitrogen bases in DNA are adenine (A), guanine (G), thymine (T), and cytosine (C). 嘌呤一般包括腺嘌呤(adenine，A)和鸟嘌呤(guanine，G)2种，嘧啶有胸腺嘧啶(thymine，T)、胞嘧啶(cytosine，C)和尿嘧啶(uracil，U)3种。
- 7. Adenine A nitrogenous base (6-amino-purine)found in DNA and RNA. 腺嘌呤：在DNA和RNA中发现的含氮的碱基（6-氨基嘌呤）。收藏指正
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- The runner was retired put out at first base. 跑垒者于第一垒上被刺杀出局。
- The runner went to second base on a wild pitch. 一记瞎设让跑垒员跑上了第二垒。
- You cannot enter a military base without a permit. 无通行证者不得擅入军事基地。
- Her heavy industry rests on a broad and firm base. 它的重工业有广泛坚实的基础。
- The Correlation Between Structural Parameter of Nitrogenous Base and PK Values 含氮有机碱结构参数与PK值的关系
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- He caught me off base with that question. 他的问题猝然把我给问倒了。
- The bombers swooped on the air base. 轰炸机突袭空军基地。
- Many languages have Latin as their base. 许多语言都以拉丁语为基础。
