This dissertation starts with the classification of familiar tools in assembly procedure and studies the construction and management of tool library with hierarchical structure in virtual environment.

本文从装配和拆卸过程中常用的装拆工具分类入手，对虚拟环境下具有层次结构的装拆工具库构建、管理进行了研究。

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The standard library, that first line of code, it's not strictly necessary but any time you use a function, a tool that someone else wrote that lives in that so called library, you do need that include line as we'll see.

标准库函数--第一行代码，严格来说，不是每次都要写的，但是一旦你调用某个别人写，的函数，而这个函数又恰巧位于标准库里面,你就要像我们看到的这样，把它include进去。

哈佛公开课 - 计算机科学课程节选

And these four finalists have some terrific ideas: putting books that have been ordered every year online instead of continuing to incur the shipping costs, to having a tool library over at NASA so that instead of buying very specialized tools over and over again for different projects, we actually keep an inventory of those tools.

WHITEHOUSE: President Obama Signs Order to Cut Waste and Promote Efficiency | The White House

And speaking of trending topics, the extinction of Reader signifies the mainstream rejection of RSS as a hands-on tool for organizing a living library of real-time information flow.

ENGADGET: The outrage and sadness of Google Reader's demise

Subscribers not interested in upgrading yet can find similar functionality tied to Spotify's library with the EchoFi tool, but this venture represents the service's debut of an "all-new intelligent recommendation engine" meant to dig the tracks you want out of its millions-deep library.

ENGADGET: Spotify Radio feature turns into an app, offers Pandora-like stations with unlimited skips