First, historical data are categorized into different sample types using cluster analysis.

首先，利用聚类分析技术对历史数据进行分类，分成不同类型的样本数据；

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The paper investigates the correlation between sample types of heavy oil and their TLC/FID Chromatograms.

对重油样品类型及其TLC/FID谱图间的相关性进行了研究。

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The sample types include rock sample, stream sediments, water samples and rarely, widely spaced soil samples.

样品类型包括岩石样品，水分沉积物，水样以及偶而采用的大间距土壤样品。

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More than half the people surveyed couldn't tell which types of data a sample app could collect.

WSJ: Selling You on Facebook

In response, yesterday we in the administration, Justice and White House reached out and showed them a representative sample of the documents that they sought so they could see firsthand the types of communications in contention.

WHITEHOUSE: Press Briefing