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汉语拼音：mì dìng

有机化合物，化学式C4H4N2。无色液体或结晶物质，有刺激性气味。用来制化学药品。[英pyrimidine]

1. [英pyrimidine]有机化合物名。无色结晶体，有刺激性气味。供制化学药品。

• The purine and pyrimidine may be complexed with a sugar to produce a nucleoside .

  嘌呤和嘧啶可以同一个糖复合，产生一个核苷。

• consequently they are commonly referred to simply by their purine or pyrimidineoriginal base components adenine, cytosine, guanine, thymine.

  因此，他们通常被称为只要他们嘌呤或嘧啶在原有的基础上组成部分腺嘌呤，胞嘧啶，鸟嘌呤，胸腺嘧啶。

• "It is possible that for some patients topical fluorouracil may have an important role against photo-aging, " they wrote.

  他们写道，对有些患者而言，局部氟尿嘧啶治疗对预防光老化很可能起着重要作用；

• Karl Fischer titration was applied to determine the water in Sulfadiazine Zine, using methanol-ammonia as the solvent.

  前言：本文以“甲醇—氨”为溶剂，用费休氏法对磺胺嘧啶锌的水分进行了测定。

• Methylation of cytosine residues is one of the most versatile mechanisms of epigenetic regulation.

  胞嘧啶残基的甲基化是表观遗传调控的最复杂的机制之一。

• Chemotherapy-treated patients usually get a combination of three drugs -- fluorouracil, doxorubicin, and cyclophosphamide.

  化疗治疗的患者，通常应用的三种药物是-氟脲嘧啶，阿霉素和环磷酰胺。

• Whether cytosine methylation is the explanation for this difference has yet to be tested, but something is clearly happening.

  胞嘧啶甲基化是否能够解释这种差异还有待考察，但是的确是有些什么东西存在着。

• The sulfamethazine antigen can be used for detecting the residue of sulfonamide.

  本发明的磺胺二甲基嘧啶抗原可以用于磺胺药物的残留检测。

• Leucovorin may also be used to prevent the side-effects of pyrimethamine.

  另外，可使用亚叶酸防止乙嘧啶的副作用。