The extension modules let you do all sorts of things: communicate with graphics libraries, data flow libraries, and all sorts of file formats.

这些扩展模块让你能想干什么就干什么：调用图形库、数据流库，还能操作各种数据格式。

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Perl and the GD modules have been used together for many years to create useful dynamic charts and graphics for Web sites and presentations.

多年来，人们一直结合使用Perl与GD模块来为Web站点和演示文稿创建有用的动态图表和图形。

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The software includes three modules, i. e. the graphics module, the database module and the graphical setting computation module. The three modules integrate into a whole system.

该软件包括用于绘制电力系统接线图的图形模块、数据库模块和进行整定计算的图形化整定计算模块。

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