Unlike straightforward extract and load operations, transformation is the most complicated piece, as there is a need to understand, convert, aggregate, and calculate data.
与直接的提取和加载操作不同，转换是最复杂的部分。因为在此过程中需要对数据进行理解、转换、聚集和计算。
The tutorial shows how to extract data from a database and store it without changes in XML format, while my article shows how to convert the data into something printable and human readable.
该教程演示如何从数据库抽取数据并不加更改地以XML格式存储，而我的文章则演示了如何将数据转换成可打印以及可读的格式。
Seagrass beds are believed to rival rice paddies in their photosynthetic productivity or the ability to extract greenhouse gas CO2 and convert it into oxygen and stored carbon matter.
种植大米的土地能高效得进行光合作用—吸收温室气体二氧化碳，将其转化为氧气，并储存碳元素，海草的生长地同样如此。
The Extract method refactoring allows you to select a block of code and convert it to a method.
ExtractMethod重构允许您选择一块代码并将其转换为一个方法。
The very neat Dublin Core metadata editor (see Resources) tool can extract Dublin Core metadata from arbitrary Web pages, and convert the result to LOM or IMS metadata.
非常灵活的DublinCore元数据编辑器工具（请参阅参考资料），能够从任何网页中提取 Dublin Core 元数据，并把结果转化成LOM或IMS 元数据。
The following code example demonstrates how to extract an icon from an embedded resource and convert it to a bitmap for display in every cell of an image column.
下面的代码示例演示如何从嵌入式资源提取图标并将其转换为位图以便在图像列的每个单元格中显示。
Using it we can conveniently and simply convert a ME into its corresponding differential equation and from solution of which we can extract the reduced density operator.
该方法能方便、简洁地将密度主方程转化为对应的普通微分方程，并能从微分方程的解中提取出约化密度算符。
Using it we can conveniently and simply convert a ME into its corresponding differential equation and from solution of which we can extract the reduced density operator.
该方法能方便、简洁地将密度主方程转化为对应的普通微分方程，并能从微分方程的解中提取出约化密度算符。
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