19世纪，人类成功从石油中提炼出煤油，煤油代替了鲸油，使得许多鲸类免受灭绝的厄运。
Kerosene refined from such petroleum helped displace the whale oil that lit lamps in the 19th century and led to the near extinction of many whale species.
从1769年开始，胆固醇就开始困扰研究者们，当时法国化学家Poulletier delaSalle第一次提炼出了这种具脂类的黄白物体。
Cholesterol has been perplexing researchers since 1769, when French Chemist Poulletier DE la Salle first purified the soapy-looking yellow-white substance.
用主成份分析法和聚类技术提炼这些运动学片段的特征。
Principal component analysis and cluster analysis are performed to refine the features of these sequences.
资料提炼：共收集到199篇关于横纹肌溶解症研究文章，其中48篇为综述类文章，17个实验研究，134篇为临床个案报道。
DATA EXTRACTION: a total of 199 literatures about rhabdomyolysis were collected, including 48 reviews, 17 experimental researches and 134 clinical case reports.
在此基础上，采用因子分析方法提炼出三个集群中龙头企业的四类行为：组织基础设施建设、企业合作、技术努力和集群声誉建立。
And then, four types of leading firms actions are abstracted, which are infrastructure construction, corporate cooperation, technology efforts and the establishment of reputation.
分析欧洲序列密码候选算法ABC的安全性，提炼出两类与安全性密切相关的具有概率优势的线性表达式。
The paper proves the probability advantages of two linear expressions which are summarized from the ABC stream cipher submitted to ECRPYT Estream Project.
本文通过对历年荣获中国电视新闻消息类一等奖作品的分析，从现场短新闻的内涵、现场画面的视觉冲击、主题的提炼、新闻标题等方面进行阐述，从中感受电视现场短新闻的魅力。
Through a careful analysis of China TV news first prize winners over the years, the author senses the charm of the brief spot coverage from their connotation, the visual shock caused by the picture...
通过香草类植物提炼而成的芳香类植物精油，是我们倾情为您开发的高品质绿色有机产品。
Vanilla extracted from plants through the aromatic essential oils, is the portrait for you to develop high-quality green organic products.
通过香草类植物提炼而成的芳香类植物精油，是我们倾情为您开发的高品质绿色有机产品。
Vanilla extracted from plants through the aromatic essential oils, is the portrait for you to develop high-quality green organic products.
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