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【化】 nicotine
例句
" Nicotine ：Principal alkaloid of tobacco, occurring throughout the plant but mostly in the leaves."
尼古丁:烟草中的主要生物碱，存在于烟草全株，特别是烟叶中。
Nicotine is a colorless,poisonous alkaloid.
尼古丁是无色有毒生物碱。
To say it further, the purpose of the nicotine inside the cigarette is indeed for stimulation.
也就是说﹐香烟里的尼古丁确实有兴奋作用。
After smoking for a long term, nicotine will reduce the vigorous mood of your nervous system to a lower level.
但长期吸烟之后﹐尼古丁会把您的神经系统的兴奋程度降低到一个比较低的水平。
Nicotine poisoning,caused by excessive use of tobacco and marked by depression of the central and autonomic nervous systems.
尼古丁中毒尼古丁中毒，因吸用烟草过量而导致并以中枢及自主神经系统的压抑为特征
When people smoke, the nicotine goes right into the blood stream.
当人们抽烟时，尼古丁就直接进入血液之中。
About 94-98% nicotine can be extd. using Ca(OH)2 as the macerating agent, and employing a steam-to-tobacco ratio of 2.5:1 to 5:1.
使用Ca(OH)2作为浸泡剂,且蒸气－香烟之比为2.5:1至5:1进行蒸气蒸馏,大约94－98%的尼古丁能够被萃取。
Extraction of Nicotine from tobacco waste.
从烟草废料中萃取尼古丁
Fingers stained with nicotine
被尼古丁染黄的手指
Low-/middle-/high-tar cigarettes
尼古丁含量低[中/高]的香烟.本文来源：http://www.173ms.com/qiuzhiziliao/85943.html
