Qt提供窗口构件、许多实用程序类和一个核心对象模型。
Qt provides the widgets, the many utility classes, and a core object model.
一个基于XML的公共数据模型(称为NIEM核心)，提供描述人员、地址、活动和组织等通用对象的数据组件。
A common XML-based data model called NIEM core that provides data components for describing universal objects such as people, locations, activities, and organizations.
炼钢生产中，定氧加铝工艺的被控对象具有参数分布、非线性、动态观测数据离散等特征，定氧加铝模型的建立是该工艺的核心。
In the process of steel-making, killing oxygen by adding aluminum process is a controlled object whose parameters are distributed and non-linear, and its observed data are discrete.
炼钢生产中，定氧加铝工艺的被控对象具有参数分布、非线性、动态观测数据离散等特征，定氧加铝模型的建立是该工艺的核心。
In the process of steel-making, killing oxygen by adding aluminum process is a controlled object whose parameters are distributed and non-linear, and its observed data are discrete.
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