大多数有机化合物中,碳原子以单键或双键或叁键彼此连接形成的不成环的长链。每一个单体都以若干个相连的碳原子构成基本的骨架,有许多单体连接成多聚体。 2017年10月27日,世界卫生组织国际癌症研究机构公布的致癌物清单初步整理参考,平均碳链长度为C12和平均氯化程度约为60%的氯化石蜡在2B类致癌物清单中。
毕业论文天下网_生物柴油_食品科学毕业论文格式范文 关键词:生物柴油;脂肪酸甲酯;碳链;柴油;润滑性 [gap=1319]Keywords: Biodiesel;Fatty acid methyl ester;Carbon chain;Diesel;Lubricity
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脂肪是不同长度的碳链,侧链上有氢原子的。
Fats are essentially chains of carbon atoms of various length with hydrogen atoms stuck on the sides.
合成途径中,有两个主要的反应,即碳链的增长和去饱和作用。
There are mainly two reactions involved in the pathways, chain elongation and desaturation.
碳链末端的原子发射电子到周围的磷光屏,得到原子核周围电子云的图像。
The atom at the tip of the chain emitted electrons onto a surrounding phosphor screen, rendering an image of the electron cloud around the nucleus.
It's phosphate, carbon, carbon, carbon, phosphate, carbon, carbon, carbon, phosphate and it has this structure hanging off the side.
就是磷酸基与戊糖的碳反复连接,如此循环往复,这种结构构成了主链的一边
This blue chain here goes from 5' carbon all along the chain and there's a 3' carbon left open at the bottom.
这条蓝色的链,从5'碳开始一直向下延伸,以3'碳做为链的末端
This is important because this molecule here, deoxyribose, is not the same upside down as it is - it's not symmetrical upside down and right side up, it's different because the 5' carbon's either pointed up or pointed down.
这很重要,因为对脱氧核糖来说,不都是像这样自上而下的,不是对称的自上向下或全部向上的,长链不同是由于,5'碳向上或者向下的指向不同
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